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Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2013	Apr. 30, 2013
Document Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Trading Symbol	PTGI
Entity Registrant Name	PRIMUS TELECOMMUNICATIONS GROUP INC
Entity Central Index Key	0001006837
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		13,953,971

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Statement [Abstract]
NET REVENUE	$ 60,883	$ 68,002
OPERATING EXPENSES
Cost of revenue (exclusive of depreciation included below)	29,470	33,505
Selling, general and administrative	22,575	27,156
Depreciation and amortization	6,600	7,597
(Gain) loss on sale or disposal of assets		43
Total operating expenses	58,645	68,301
INCOME (LOSS) FROM OPERATIONS	2,238	(299)
INTEREST EXPENSE	(4,216)	(6,879)
ACCRETION (AMORTIZATION) ON DEBT PREMIUM/DISCOUNT, net	(32)	(57)
GAIN (LOSS) FROM CONTINGENT VALUE RIGHTS VALUATION	112	(7,190)
INTEREST INCOME AND OTHER INCOME (EXPENSE), net	18	4
FOREIGN CURRENCY TRANSACTION GAIN (LOSS)	1	1,951
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(1,879)	(12,470)
INCOME TAX BENEFIT (EXPENSE)	(50)	1,106
INCOME (LOSS) FROM CONTINUING OPERATIONS	(1,929)	(11,364)
INCOME (LOSS) FROM DISCONTINUED OPERATIONS, net of tax	(1,283)	4,612
NET INCOME (LOSS)	(3,212)	(6,752)
Less: Net (income) loss attributable to the noncontrolling interest		(106)
NET INCOME (LOSS) ATTRIBUTABLE TO PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED	$ (3,212)	$ (6,858)
BASIC INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$ (0.14)	$ (0.84)
Income (loss) from discontinued operations	(0.09)	0.34
Net income (loss) attributable to Primus Telecommunications Group, Incorporated	(0.23)	(0.50)
DILUTED INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	(0.14)	(0.84)
Income (loss) from discontinued operations	(0.09)	0.34
Net income (loss) attributable to Primus Telecommunications Group, Incorporated	$ (0.23)	$ (0.50)
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic	13,909	13,744
Diluted	13,909	13,744
AMOUNTS ATTRIBUTABLE TO COMMON SHAREHOLDERS OF PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED
Income (loss) from continuing operations, net of tax	$ (1,929)	$ (11,470)
INCOME (LOSS) FROM DISCONTINUED OPERATIONS, net of tax	(1,283)	4,612
NET INCOME (LOSS) ATTRIBUTABLE TO PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED	$ (3,212)	$ (6,858)

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Statement Of Income And Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ (3,212)	$ (6,752)
OTHER COMPREHENSIVE INCOME (LOSS)
Foreign currency translation adjustment	(2,320)	1,190
COMPREHENSIVE INCOME (LOSS)	(5,532)	(5,562)
Less: Comprehensive (income) loss attributable to the noncontrolling interest		(302)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED	$ (5,532)	$ (5,864)

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References + Details

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References + Details

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

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+ Details

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2013	Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 13,844	$ 23,197
Accounts receivable (net of allowance for doubtful accounts receivable of $1,558 and $1,771 at March 31, 2013 and December 31, 2012, respectively)	18,565	17,871
Prepaid expenses and other current assets	5,372	5,792
Assets held for sale	39,284	40,066
Total current assets	77,065	86,926
RESTRICTED CASH	832	848
PROPERTY AND EQUIPMENT - Net	66,198	65,315
GOODWILL	60,085	60,744
OTHER INTANGIBLE ASSETS - Net	60,265	63,024
OTHER ASSETS	23,343	24,333
TOTAL ASSETS	287,788	301,190
CURRENT LIABILITIES:
Accounts payable	14,217	12,218
Accrued interconnection costs	2,131	2,992
Deferred revenue	8,293	8,821
Accrued expenses and other current liabilities	14,524	20,565
Accrued income taxes	7,701	7,741
Accrued interest	4,926	1,716
Current portion of long-term obligations	54	66
Liabilities held for sale	18,840	24,304
Total current liabilities	70,686	78,423
LONG-TERM OBLIGATIONS	127,069	127,046
DEFERRED TAX LIABILITY	11,194	11,367
CONTINGENT VALUE RIGHTS	14,792	14,904
OTHER LIABILITIES	948	947
Total liabilities	224,689	232,687
COMMITMENTS AND CONTINGENCIES (See Note 5)
STOCKHOLDERS' EQUITY:
Preferred stock, $0.001 par value - 20,000,000 shares authorized; none issued and outstanding
Common stock, $0.001 par value - 80,000,000 shares authorized; 13,938,574 and 13,965,155 shares issued and 13,906,948 and 13,933,529 shares outstanding at March 31, 2013 and December 31, 2012, respectively	14	14
Additional paid-in capital	98,662	98,534
Accumulated deficit	(26,410)	(23,198)
Treasury stock, at cost - 31,626 shares at March 31, 2013 and December 31, 2012, respectively	(378)	(378)
Accumulated other comprehensive loss	(8,789)	(6,469)
Total stockholders' equity	63,099	68,503
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 287,788	$ 301,190

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts receivable	$ 1,558	$ 1,771
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	13,938,574	13,965,155
Common stock, shares outstanding	13,906,948	13,933,529
Treasury stock, shares	31,626	31,626

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - 3 months ended Mar. 31, 2013 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Earnings (Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2012	$ 68,503	$ 14	$ 98,534	$ (378)	$ (23,198)	$ (6,469)
Beginning Balance, Shares at Dec. 31, 2012		13,934
Share-based compensation expense	523		523
Proceeds from sale of common stock, net
Proceeds from sale of common stock, net, Shares		9
Taxes paid in lieu of shares issued for share-based compensation	(395)		(395)
Taxes paid in lieu of shares issued for share-based compensation, Shares		(36)
NET INCOME (LOSS)	(3,212)				(3,212)
Foreign currency translation adjustment	(2,320)					(2,320)
Ending Balance at Mar. 31, 2013	$ 63,099	$ 14	$ 98,662	$ (378)	$ (26,410)	$ (8,789)
Ending Balance, Shares at Mar. 31, 2013		13,907

- Definition

This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

+ References

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-Name Statement of Financial Accounting Standard (FAS)
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+ Details

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

+ Details

- Definition

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME (LOSS)	$ (3,212)	$ (6,752)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Provision for doubtful accounts receivable	736	1,344
Share-based compensation expense	523	1,702
Depreciation and amortization	6,600	14,521
(Gain) loss on sale or disposal of assets	(5)	864
(Accretion) amortization of debt premium/discount, net	32	57
Change in fair value of Contingent Value Rights	(112)	7,190
Deferred income taxes	(156)	1,158
Unrealized foreign currency transaction (gain) loss on intercompany and foreign debt	186	(4,831)
Changes in assets and liabilities, net of acquisitions:
(Increase) decrease in accounts receivable	(2,166)	10,152
(Increase) decrease in prepaid expenses and other current assets	1,019	(1,575)
(Increase) decrease in other assets	967	2,007
Increase (decrease) in accounts payable	(1,028)	(4,735)
Increase (decrease) in accrued interconnection costs	(1,698)	(754)
Increase (decrease) in accrued expenses, deferred revenue, other current liabilities and other liabilities, net	(6,374)	(4,528)
Increase (decrease) in accrued income taxes	94	(3,033)
Increase (decrease) in accrued interest	3,210	5,241
Net cash provided by (used in) operating activities	(1,384)	18,028
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(6,517)	(8,111)
Sale of property and equipment and other assets	5
Cash acquired from business acquisitions, net of cash paid	(397)	(1,333)
(Increase) decrease in restricted cash		(85)
Net cash used in investing activities	(6,909)	(9,529)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on long-term obligations	(80)	(1,823)
Payment of fees on restructuring of debt		(1,976)
Proceeds from sale of common stock, net		30
Payment of dividend equivalents	(394)
Taxes paid in lieu of shares issued for share-based compensation	(395)	(92)
Net cash used in financing activities	(869)	(3,861)
EFFECTS OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	(191)	491
NET CHANGE IN CASH AND CASH EQUIVALENTS	(9,353)	5,129
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	23,197	41,052
CASH AND CASH EQUIVALENTS, END OF PERIOD	13,844	46,181
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest	52	1,000
Cash paid for taxes	125	$ 2,225
Non-cash investing and financing activities:
Capital lease additions	$ 148

Basis of Presentation	3 Months Ended
Basis of Presentation	Mar. 31, 2013
Accounting Policies [Abstract]
Basis of Presentation	1. BASIS OF PRESENTATION The accompanying unaudited condensed consolidated financial statements of Primus Telecommunications Group, Incorporated (“PTGi” and, together with its subsidiaries, the “Company,” “we” and “our”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial reporting and Securities and Exchange Commission (“SEC”) regulations. Certain information and footnote disclosures normally included in the financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such principles and regulations. In the opinion of management, the financial statements reflect all adjustments (all of which are of a normal and recurring nature), which are necessary to present fairly the financial position, results of operations, cash flows and comprehensive income (loss) for the interim periods. The results for the Company’s three months ended March 31, 2013 are not necessarily indicative of the results that may be expected for the year ending December 31, 2013. The results for all periods presented in this Quarterly Report on Form 10-Q reflect the activities of certain operations as discontinued operations (see Note 11—“Discontinued Operations”). The financial statements should be read in conjunction with the Company’s audited consolidated financial statements included in the Company’s most recently filed Annual Report on Form 10-K.

- Definition

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

+ References

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Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Mar. 31, 2013
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation—The condensed consolidated financial statements include the Company’s accounts, its wholly owned subsidiaries and all other subsidiaries over which the Company exerts control. Prior to July 31, 2012, the Company owned 45.6% of Globility Communications Corporation (“Globility”) through direct and indirect ownership structures. As a result of changes to the Telecommunications Act in Canada, the Company is no longer restricted by Canadian foreign ownership laws. Given these changes, Primus Telecommunications International, Inc. (“PTII”) purchased the remaining 54.4% of Globility on July 31, 2012. Prior to the purchase of the remaining 54.4%, the results of Globility and its subsidiary are consolidated with the Company’s results based on guidance from the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) No. 810, “Consolidation” (“ASC 810”). All intercompany profits, transactions and balances have been eliminated in consolidation. Discontinued Operations—In the second quarter of 2012, the Company sold its Australian segment and committed to dispose of and is actively soliciting a sale or other disposition of its International Carrier Services (“ICS”) business unit. The Company has applied retrospective adjustments for the three months ended March 31, 2012 to reflect the effects of the discontinued operations that occurred during 2012. Accordingly, revenue, costs and expenses of the discontinued operations have been excluded from the respective captions in the condensed consolidated statements of operations. Additionally, the assets and liabilities of ICS have been classified as held for sale assets and liabilities and removed from the specific line items on the condensed consolidated balance sheets as of March 31, 2013 and December 31, 2012. See Note 11—“Discontinued Operations,” for further information regarding these transactions. Property and Equipment—Property and equipment are recorded at cost less accumulated depreciation, which is provided on the straight-line method over the estimated useful lives of the assets. Cost includes major expenditures for improvements and replacements which extend useful lives or increase capacity of the assets as well as expenditures necessary to place assets into readiness for use. Expenditures for maintenance and repairs are expensed as incurred. The estimated useful lives of property and equipment are as follows: network equipment—5 to 8 years, fiber optic and submarine cable—8 to 25 years, furniture and equipment—5 years, and leasehold improvements and leased equipment—shorter of lease or useful life. Costs for internal use software that are incurred in the preliminary project stage and in the post-implementation stage are expensed as incurred. Costs incurred during the application development stage are capitalized and amortized over the estimated useful life of the software. Business Combinations—The Company is required to allocate the purchase price of acquired companies to the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values. This valuation requires management to make significant estimates and assumptions, especially with respect to intangible assets associated with such assets. Critical estimates in valuing certain of the intangible assets and subsequently assessing the realizability of such assets include, but are not limited to, future expected cash flows from the revenues, customer contracts and discount rates. Management’s estimates of fair value are based on assumptions believed to be reasonable but which are inherently uncertain and unpredictable. Assumptions may be incomplete or inaccurate and unanticipated events and circumstances may occur. Goodwill and Other Intangible Assets—Under ASC No. 350, “Intangibles—Goodwill and Other” (“ASC 350”), goodwill and indefinite lived intangible assets are not amortized but are reviewed annually for impairment, or more frequently, if impairment indicators arise. Intangible assets that have finite lives are amortized over their estimated useful lives and are subject to the provisions of ASC No. 360, “Property, Plant and Equipment” (“ASC 360”). Goodwill impairment is tested at least annually (October 1^st) or when factors indicate potential impairment using a two-step process that begins with an estimation of the fair value of each reporting unit. Step 1 is a screen for potential impairment pursuant to which the estimated fair value of each reporting unit is compared to its carrying value. The Company estimates the fair values of each reporting unit by a combination of (i) estimation of the discounted cash flows of each of the reporting units based on projected earnings in the future (the income approach) and (ii) a comparative analysis of revenue and EBITDA multiples of public companies in similar markets (the market approach). If there is a deficiency (the estimated fair value of a reporting unit is less than its carrying value), a Step 2 test is required. Step 2 measures the amount of impairment loss, if any, by comparing the implied fair value of the reporting unit’s goodwill with its carrying amount. The implied fair value of goodwill is determined in the same manner as the amount of goodwill recognized in a business combination is determined; i.e., through an allocation of the fair value of a reporting unit to all of the assets and liabilities of that unit as if the reporting unit had been acquired in a business combination. If the carrying amount of the reporting unit goodwill exceeds the implied fair value of that goodwill, an impairment loss shall be recognized in an amount equal to that excess. The Company also may utilize the provisions of Accounting Standards Update (“ASU”) No. 2011-08, “Testing Goodwill for Impairment” (“ASU 2011-08”), which allows the Company to use qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. The Company’s reporting units in 2011 were Australia, Canada and US/ICS. In May 2012, the Australian reporting unit was sold, and the reporting units were Canada and US/ICS. Subsequent to classifying ICS as a discontinued operation in the second quarter of 2012, the remaining reporting units are Canada and US. Estimating the fair value of a reporting unit requires various assumptions including projections of future cash flows, perpetual growth rates and discount rates. The assumptions about future cash flows and growth rates are based on the Company’s assessment of a number of factors, including the reporting unit’s recent performance against budget, performance in the market that the reporting unit serves, and industry and general economic data from third party sources. Discount rate assumptions are based on an assessment of the risk inherent in those future cash flows. Changes to the underlying businesses could affect the future cash flows, which in turn could affect the fair value of the reporting unit. Intangible assets not subject to amortization consist of certain trade names. Such indefinite lived intangible assets are tested for impairment annually, or more frequently if events or changes in circumstances indicate that the asset might be impaired. The impairment test shall consist of a comparison of the fair value of an intangible asset with its carrying amount. If the carrying amount of the intangible asset exceeds its fair value, an impairment loss shall be recognized in an amount equal to the excess. Intangible assets subject to amortization consist of certain trade names and customer relationships. These finite lived intangible assets are amortized based on their estimated useful lives. Such assets are subject to the impairment provisions of ASC 360, wherein impairment is recognized and measured only if there are events and circumstances that indicate that the carrying amount may not be recoverable. The carrying amount is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use of the asset group. An impairment loss is recorded if after determining that it is not recoverable, the carrying amount exceeds the fair value of the asset. In addition to the foregoing, the Company reviews its goodwill and intangible assets for possible impairment whenever events or circumstances indicate that the carrying amounts of assets may not be recoverable. The factors that the Company considers important, and which could trigger an impairment review, include, but are not limited to: a significant decline in the market value of our common stock or debt securities for a sustained period; a material adverse change in economic, financial market, industry or sector trends; a material failure to achieve operating results relative to historical levels or projected future levels; and significant changes in operations or business strategy. The current carrying values by reporting unit of the goodwill and other indefinite-lived intangible assets are disclosed in Note 3—“Goodwill and Other Intangible Assets.” Valuation of Long-lived Assets (Held for Sale)—In conjunction with the Company’s commitment to dispose of its ICS business, it classified the net assets of ICS as held for sale and is required to measure them at the lower of carrying value or fair value less costs to sell. The Company makes significant assumptions and estimates in the process of determining fair value regarding matters that are inherently uncertain, such as estimating future cash flows, discount rates and growth rates. The resulting cash flows are projected over an extended period of time, which subjects those assumptions and estimates to an even larger degree of uncertainty. While the Company believes that its estimates are reasonable, different assumptions could materially affect the valuation of the net assets of ICS. The current year analysis of carrying value and fair value less costs to sell is disclosed in Note 11—“Discontinued Operations.” Derivative Instruments— Pursuant to the terms of the Company’s 2009 bankruptcy reorganization (the “Reorganization Plan”), the Company issued to holders of the Company’s pre-Reorganization Plan common stock contingent value rights (“CVRs”) to receive shares of Company common stock (subject to adjustment, the “CVR Shares”) in an original aggregate amount of up to 2,665,000 shares. In connection with the issuance of the CVRs, the Company entered into a Contingent Value Rights Distribution Agreement (the “CVR Agreement”), in favor of holders of CVRs thereunder, dated as of July 1, 2009. As a result of the special cash Dividends discussed in Note 7—“Stockholders’ Equity,” antidilution provisions in the CVR Agreement were triggered and the maximum aggregate number of CVR Shares issuable with respect to the CVRs was adjusted upward from 2,665,000 shares to 3,657,157 shares while the strike price with respect to the CVRs was adjusted downward from $35.95 to $26.20. Due to the nature of the CVRs, the Company accounted for the instrument in accordance with ASC No. 815, “Derivatives and Hedging” (“ASC 815”), as well as related interpretations of this standard. The Company determined the CVRs to be derivative instruments to be accounted for as liabilities and marked to fair value at each balance sheet date. Upon issuance, the Company estimated the fair value of its CVRs using a pricing model and consequently recorded a liability of $2.6 million in the balance sheet caption “other liabilities” as part of fresh-start accounting. Post-issuance change in value is reflected in the consolidated statements of operations as gain (loss) from contingent value rights valuation. The Company’s estimates of fair value of its CVRs are correlated to and reflective of PTGi’s common stock price trends; in general, as the value of PTGi’s common stock increases, the estimated fair value of the CVRs also increases and, as a result, the Company recognizes a change in value of its CVRs as loss from contingent value rights valuation. Conversely and also in general, as the value of PTGi’s common stock decreases, the estimated fair value of the CVRs also decreases and as a result the Company recognizes a change in value of the CVRs as gain from contingent value rights valuation. See Note 9—“Fair Value of Financial Instruments and Derivatives.” Use of Estimates—The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of net revenue and expenses during the reporting period. Actual results may differ from these estimates. Significant estimates include allowance for doubtful accounts receivable, accrued interconnection cost disputes, the fair value of derivatives, market assumptions used in estimating the fair values of certain assets and liabilities, the calculation used in determining the fair value of PTGi’s stock options required by ASC No. 718, “Compensation—Stock Compensation” (“ASC 718”), income taxes and various tax contingencies. Estimates of fair value represent the Company’s best estimates developed with the assistance of independent appraisals or various valuation techniques and, where the foregoing have not yet been completed or are not available, industry data and trends and by reference to relevant market rates and transactions. The estimates and assumptions are inherently subject to significant uncertainties and contingencies beyond the control of the Company. Accordingly, the Company cannot provide assurance that the estimates, assumptions, and values reflected in the valuations will be realized, and actual results could vary materially. Any adjustments to the recorded fair values of these assets and liabilities, as related to business combinations and subsequent impairment assessment of goodwill, may impact the amount of recorded goodwill. Reclassification—Certain previous year amounts have been reclassified to conform with current year presentations, as related to the reporting of the Company’s discontinued operations. In addition, certain amounts in selling, general and administrative expense related to our BLACKIRON Data operating segment were reclassified to cost of revenue as part of the Company’s new operating segment structure discussed in Note 10—“Operating Segment and Related Information.” Newly Adopted Accounting Principles In February 2013, an update was issued to the Comprehensive Income Topic No. 220, ASU 2013-02, “Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income,” which requires entities to disclose additional information about items reclassified out of accumulated other comprehensive income (“AOCI”). ASU 2013-02 does not change the current U.S. GAAP requirements, for either public or nonpublic entities, for interim financial statement reporting of comprehensive income. That is, a total for comprehensive income must be reported in condensed interim financial statements in either (1) a single continuous statement or (2) two separate but consecutive statements. Entities should disclose the changes in AOCI balances by component. Both before-tax and net-of-tax presentations of the information are acceptable as long as an entity presents the income tax benefit or expense attributed to each component of other comprehensive income and reclassification adjustments in either the financial statements or the notes to the financial statements. Entities should also disclose significant items reclassified out of AOCI by component either on the face of the income statement or as a separate footnote to the financial statements. On January 1, 2013, the Company adopted this update, which did not have a material impact on the condensed consolidated financial statements. In January 2013, an update was issued to the Balance Sheet Topic ASC No. 210 to clarify the scope of the offsetting disclosure requirements of ASU 2011-11, “Disclosures about Offsetting Assets and Liabilities.” Under ASU 2013-01, “Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities,” the disclosure requirements would apply to derivative instruments accounted for in accordance with ASC 815, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending arrangements that are either offset on the balance sheet or subject to an enforceable master netting arrangement or similar agreement. On January 1, 2013, the Company adopted this update, which did not have a material impact on the condensed consolidated financial statements. Retrospective application is required for all comparative periods presented. In July 2012, an update was issued to the Intangibles—Goodwill and Other Topic ASC No. 350, ASU 2012-02, “Testing Indefinite-Lived Intangible Assets for Impairment,” which provides guidance to all entities, both public and nonpublic, that have indefinite-lived intangible assets, other than goodwill, reported in their financial statements. Under the amendments in this update, an entity has the option first to assess qualitative factors to determine whether the existence of events and circumstances indicates that it is more likely than not that the indefinite-lived intangible asset is impaired. If, after assessing the totality of events and circumstances, an entity concludes that it is not more likely than not that the indefinite-lived intangible asset is impaired, then the entity is not required to take further action. However, if an entity concludes otherwise, then it is required to determine the fair value of the indefinite-lived intangible asset and perform the quantitative impairment test by comparing the fair value with the carrying amount. An entity has the option to bypass the qualitative assessment for any indefinite-lived intangible asset in any period and proceed directly to performing the quantitative impairment test. An entity will be able to resume performing the qualitative assessment in any subsequent period. On January 1, 2013, the Company adopted this update, which did not have a material impact on the condensed consolidated financial statements. In December 2011, an update was issued to the Balance Sheet Topic ASC No. 210, ASU 2011-11, “Disclosures about Offsetting Assets and Liabilities,” which contains new disclosure requirements regarding the nature of an entity’s right of setoff and related arrangements associated with its financial instruments and derivative instruments. The new disclosures are designed to make financial statements that are prepared under U.S. GAAP more comparable to those prepared under International Financial Reporting Standards (“IFRSs”). Generally, it is more difficult to qualify for offsetting under IFRSs than it is under U.S. GAAP because under U.S. GAAP certain derivative and repurchase agreement arrangements are granted exceptions from the general offsetting model. As a result, entities with significant financial instrument and derivative portfolios that report under IFRSs typically present positions on their balance sheets that are significantly larger than those of entities with similarly sized portfolios whose financial statements are prepared in accordance with U.S. GAAP. To facilitate comparison between financial statements prepared under U.S. GAAP and IFRSs, the new disclosures will give financial statement users information about both gross and net exposures. On January 1, 2013, the Company adopted this update, which did not have a material impact on the condensed consolidated financial statements. New Accounting Pronouncements In March 2013, an update was issued to the Foreign Currency Matters Topic No. 830, ASU 2013-05, “Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity,” which indicates that the entire amount of a cumulative translation adjustment related to an entity’s investment in a foreign entity should be released when there has been a (1) sale of a subsidiary or group of net assets within a foreign entity and the sale represents the substantially complete liquidation of the investment in the foreign entity; (2) loss of a controlling financial interest in an investment in a foreign entity; or (3) step acquisition for a foreign entity. Early adoption is permitted and this accounting update should be applied prospectively from the beginning of the fiscal year of adoption. The Company’s effective date for adoption is January 1, 2014. The Company does not foresee this accounting update having a material effect on its condensed consolidated financial statements in future periods, although that could change.

Goodwill and Other Intangible Assets

3 Months Ended

Mar. 31, 2013

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

3. GOODWILL AND OTHER INTANGIBLE ASSETS

The Company’s intangible assets not subject to amortization consisted of the following (in thousands):


	March 31, 2013		December 31, 2012
Goodwill	$	60,085	$	60,744
Trade names	$	27,000	$	27,000

Goodwill

The changes in the carrying amount of goodwill by reporting unit for the three months ended March 31, 2013 are as follows (in thousands):


	United States		Canada			Total
Balance as of December 31, 2012	$	26,582	$	34,162		$	60,744
Effect of change in foreign currency exchange rates		—		(659	)		(659	)

Balance as of March 31, 2013	$	26,582	$	33,503		$	60,085

Trade Names

There was no change in the carrying amount of trade names by reporting unit for the three months ended March 31, 2013.

Amortizable Intangible Assets

Intangible assets subject to amortization consisted of the following (in thousands):


	March 31, 2013							December 31, 2012
	Gross Carrying Amount		Accumulated Amortization			Net Book Value		Gross Carrying Amount		Accumulated Amortization			Net Book Value
Trade names	$	3,500	$	(1,226	)	$	2,274	$	3,500	$	(1,140	)	$	2,360
Customer relationships		92,405		(61,414	)		30,991		94,142		(60,478	)		33,664

Total	$	95,905	$	(62,640	)	$	33,265	$	97,642	$	(61,618	)	$	36,024

Amortization expense for trade names and customer relationships for the three months ended March 31, 2013 was $2.1 million compared to $2.8 million for the three months ended March 31, 2012.

The Company expects amortization expense for trade names and customer relationships for the remainder of 2013, the years ending December 31, 2014, 2015, 2016, 2017 and thereafter to be approximately $6.2 million, $6.1 million, $4.6 million, $3.6 million, $2.8 million and $10.0 million, respectively.

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Long-Term Obligations

3 Months Ended

Mar. 31, 2013

Debt Disclosure [Abstract]

Long-Term Obligations

4. LONG-TERM OBLIGATIONS

Long-term obligations consisted of the following (in thousands):


	March 31, 2013			December 31, 2012
Obligations under capital leases and other	$	80		$	101
13% Senior Secured Notes due 2016		2,403			2,403
10% Senior Secured Notes due 2017		12,692			12,692
10% Senior Secured Exchange Notes due 2017		112,587			112,587

Subtotal	$	127,762		$	127,783
Original issue discount on Senior Secured Notes		(639	)		(671	)

Subtotal	$	127,123		$	127,112
Less: Current portion of long-term obligations		(54	)		(66	)

Total long-term obligations	$	127,069		$	127,046

The following table reflects the contractual payments of principal and interest for the Company’s long-term obligations as of March 31, 2013:


Year Ending December 31,	Capital Leases and Other			13% Senior Secured Notes due 2016			10% Senior Secured Notes due 2017			10% Senior Secured Exchange Notes due 2017			Total
2013 (as of March 31, 2013)	$	51		$	312		$	1,269		$	10,383		$	12,015
2014		30			312			1,269			11,259			12,870
2015		6			312			1,269			11,259			12,846
2016		—			2,716			1,269			11,259			15,244
2017		—			—			13,327			118,217			131,544
Thereafter		—			—			—			—			—

Total minimum principal & interest payments		87			3,652			18,403			162,377			184,519
Less: Amount representing interest		(7	)		(1,249	)		(5,711	)		(49,790	)		(56,757	)

Total long-term obligations	$	80		$	2,403		$	12,692		$	112,587		$	127,762

13% Senior Secured Notes due 2016

As of March 31, 2013, there was outstanding $2.4 million in aggregate principal amount of the 13% Senior Secured Notes due 2016 (the “13% Notes”) issued by Primus Telecommunications Holding, Inc. (“PTHI”) and Primus Telecommunications Canada Inc. (“PTCI”), each of which is a wholly owned subsidiary of PTGi. The 13% Notes bear interest at a rate of 13.00% per annum, payable semi-annually in arrears in cash on June 15 and December 15 of each year. The 13% Notes will mature on December 16, 2016.

10% Senior Secured Notes due 2017 and 10% Senior Secured Exchange Notes due 2017

Exchange Offers and Consent Solicitation; Issuance of the 10% Notes

On July 7, 2011, in connection with the consummation of the private (i) exchange offers (the “Exchange Offers”) for any and all outstanding Units representing the 13% Notes issued by PTHI and PTCI and the 14¹/₄% Senior Subordinated Secured Notes due 2013 (the “14¹/₄% Notes”) issued by Primus Telecommunications IHC, Inc., (ii) consent solicitation (the “Consent Solicitation”) to amend the indenture governing the 13% Notes and release the collateral securing the 13% Notes, and (iii) related transactions, PTHI issued $240.2 million in aggregate principal amount of the 10% Senior Secured Notes due 2017 (the “10% Notes”) under that certain indenture, dated as of July 7, 2011 (as amended or supplemented from time to time, the “10% Notes Indenture”), by and among PTHI, each of the Guarantors party thereto and U.S. Bank National Association, as Trustee and Collateral Trustee. An aggregate of $228.6 million in principal amount of 10% Notes was issued pursuant to the Exchange Offers, and PTHI issued an additional $11.6 million in aggregate principal amount of 10% Notes for cash, the proceeds of which were used to redeem all 14¹/₄% Notes that were not exchanged pursuant to the Exchange Offers and thereby discharge all of our obligations with respect to the 14¹/₄% Notes. In connection with the Exchange Offers, the Company also incurred $6.9 million of third party costs which are included in gain (loss) on early extinguishment or restructuring of debt on the condensed consolidated statements of operations in the third quarter of 2011.

The 10% Notes and related guarantees are secured by a pledge of and first lien security interest in (subject to certain exceptions) substantially all of the assets of PTHI and the guarantors of the 10% Notes, including PTGi (the “Guarantors”), including a first-priority pledge of all of the capital stock held by PTHI, the Guarantors and each subsidiary of PTGi that is a foreign subsidiary holding company (which pledge, in the case of the capital stock of each non-U.S. subsidiary and each subsidiary of PTGi that is a foreign subsidiary holding company, is limited to 65% of the capital stock of such subsidiary).

The 10% Notes rank senior in right of payment to existing and future subordinated indebtedness of PTHI and the Guarantors. The 10% Notes rank equal in right of payment with all existing and future senior indebtedness of PTHI and the Guarantors. The 10% Notes rank junior to any priority lien obligations entered into by PTHI or the Guarantors in accordance with the 10% Notes Indenture.

Prior to March 15, 2013, PTHI could redeem up to 35% of the aggregate principal amount of the 10% Notes at the redemption premium of 110% of the principal amount of the 10% Notes redeemed, plus accrued and unpaid interest, with the net cash proceeds of certain equity offerings. Prior to March 15, 2013, PTHI could redeem some or all of the 10% Notes at a make-whole premium as set forth in the 10% Notes Indenture. On or after March 15, 2013, PTHI may redeem some or all of the 10% Notes at a premium that will decrease over time as set forth in the 10% Notes Indenture, plus accrued and unpaid interest.

Upon the occurrence of certain Changes of Control (as defined in the 10% Notes Indenture) with respect to the Company, PTHI must give holders of the 10% Notes an opportunity to sell their 10% Notes to PTHI at a purchase price of 100% of the principal amount of such 10% Notes, plus accrued and unpaid interest, if any, to the date of purchase. If PTGi or any of its restricted subsidiaries consummates certain Asset Sales (as defined in the 10% Notes Indenture) and does not choose to use all of the net proceeds of such Asset Sale for specified purposes, PTHI may be required to use the remaining net proceeds from such Asset Sale (which are defined as “Excess Proceeds” under the 10% Notes Indenture) to offer to repurchase the 10% Notes using such Excess Proceeds at a purchase price of 100% of their principal amount, plus accrued and unpaid interest.

The 10% Notes Indenture contains covenants that, subject to certain exceptions, limit the ability of each of PTGi and its restricted subsidiaries to, among other things: (i) incur additional indebtedness; (ii) pay dividends on, repurchase or make distributions in respect of PTGi’s capital stock or make other restricted payments; (iii) make certain investments; (iv) sell, transfer or otherwise convey certain assets; (v) create certain liens; (vi) designate future subsidiaries as unrestricted subsidiaries; (vii) consolidate, merge, sell or otherwise dispose of all or substantially all of its assets; and (viii) enter into certain transactions with affiliates. The 10% Notes Indenture contains other customary terms, including, but not limited to, events of default, which, if any of them occurs, would permit or require the principal, premium, if any, and interest, if any, on all of the then outstanding 10% Notes to be due and payable immediately.

Repurchases of 10% Notes

On September 17, 2012, PTHI consummated the repurchase of $119.0 million in aggregate principal amount of its 10% Notes for a purchase price equal to 109% of the principal amount thereof, plus accrued but unpaid interest to the date of repurchase, in each case pursuant to agreements with certain selling holders of 10% Notes. In connection with this repurchase, the sellers of the 10% Notes, representing a majority in principal amount of the outstanding 10% Notes, consented to amendments of the 10% Notes Indenture to remove substantially all of the restrictive and reporting covenants under the 10% Notes Indenture, as well as certain events of default and related provisions. PTHI, the Guarantors and U.S. Bank National Association, as Trustee, entered into a Supplemental Indenture, dated as of September 17, 2012 (the “First Supplemental Indenture”), to memorialize such 10% Notes Indenture amendments.

In connection with the September 2012 10% Notes repurchase, the Company incurred $10.9 million of premiums and other costs and wrote off $9.5 million of deferred financing costs and $0.7 million of original issue discount, all of which are included in gain (loss) on early extinguishment or restructuring of debt on the condensed consolidated statements of operations in the third quarter of 2012.

Prior to the September 2012 10% Notes repurchase, the Company repurchased $5.0 million in aggregate principal amount of the 10% Notes at 99% of face value in December 2011.

2012 Note Exchanges for Newly Issued 10% Exchange Notes

On November 14, 2012, PTHI consummated the exchange (the “Note Exchange”) of $79.7 million in aggregate principal amount of its 10% Notes for $86.9 million in aggregate principal amount of its 10% Senior Secured Exchange Notes due 2017 (the “10% Exchange Notes”), which were newly issued pursuant to the Second Supplemental Indenture (as defined below) to the 10% Notes Indenture. PTHI also paid accrued but unpaid interest on the exchanged 10% Notes for the period from October 15, 2012 to, but not including, November 14, 2012. The 10% Exchange Notes accrue interest from November 14, 2012 and are guaranteed by the same entities, including PTGi, that guarantee the 10% Notes. The terms of the 10% Exchange Notes are substantially similar to those governing the 10% Notes, which are described in greater detail above under “—Exchange Offers and Consent Solicitation; Issuance of the 10% Notes,” except that the applicable redemption price of the 10% Exchange Notes at any time such notes are redeemed is 100.00% of the principal amount of such 10% Exchange Notes redeemed, plus accrued and unpaid interest.

In connection with the Note Exchange, the participating noteholders consented to amendments to the 10% Notes Indenture contained in, and PTGi and the other Guarantors agreed to enter into, that certain Second Supplemental Indenture and First Amendment to Collateral Agreement, dated as of November 14, 2012 (the “Second Supplemental Indenture”), by and among PTHI, the Guarantors and U.S. Bank National Association, as Trustee and Collateral Trustee. Among other things, the Second Supplemental Indenture (i) reinstated substantially all of the events of default, restrictive and reporting covenants and related provisions and definitions of the 10% Notes Indenture that were eliminated by the First Supplemental Indenture, with certain amendments thereto to establish a new $50,000,000 restricted payment basket and to permit the incurrence of certain additional parity lien debt, (ii) established the 10% Exchange Notes issuable under the 10% Notes Indenture, (iii) authorized the Note Exchange and (iv) made certain other changes in the 10% Notes Indenture that are of a technical or conforming nature, including the amendment and restatement of certain provisions, the addition of certain definitions and the amendment of certain cross-references.

On December 19, 2012, PTHI consummated a second note exchange of $23.8 million in aggregate principal amount of its 10% Notes for $25.7 million in aggregate principal amount of its 10% Exchange Notes. PTHI also paid accrued but unpaid interest on the exchanged 10% Notes for the period from October 15, 2012 to, but not including, November 14, 2012.

The Company evaluated the application of ASC No. 470-50, “Debt—Modifications and Extinguishments” (“ASC 470-50”), and concluded that the November and December 2012 note exchanges described above constituted a debt modification with respect to the 10% Notes. Under ASC 470-50, the premium of $9.1 million paid to the exchanging holders of 10% Notes, was capitalized and will be amortized over the life of the 10% Exchange Notes. It is included in other assets in the condensed consolidated balance sheets.

Outstanding 10% Notes and 10% Exchange Notes

As of March 31, 2013, there was (i) $12.7 million in aggregate principal amount of the 10% Notes outstanding and (ii) $112.6 million in aggregate principal amount of the 10% Exchange Notes outstanding. The 10% Notes and 10% Exchange Notes bear interest at a rate of 10.00% per annum, payable semi-annually in arrears in cash on April 15 and October 15 of each year. The 10% Notes and 10% Exchange Notes will mature on April 15, 2017.

Commitments and Contingencies

3 Months Ended

Mar. 31, 2013

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

5. COMMITMENTS AND CONTINGENCIES

Future minimum lease payments under purchase obligations and non-cancellable operating leases, including continuing obligations of discontinued operations, as of March 31, 2013 are as follows (in thousands):


Year Ending December 31,	Purchase Obligations		Operating Leases
2013 (as of March 31, 2013)	$	3,786	$	8,703
2014		4,335		8,814
2015		413		7,320
2016		373		6,234
2017		373		5,696
Thereafter		932		14,070

Total long-term obligations	$	10,212	$	50,837

The Company has contractual obligations to utilize an external vendor for certain customer support functions and to utilize network facilities from certain carriers with terms greater than one year. Generally, the Company does not purchase or commit to purchase quantities in excess of normal usage or amounts that cannot be used within the contract term or at rates below or above market value. The Company made payments under purchase commitments of $1.3 million and $2.7 million for the three months ended March 31, 2013 and 2012, respectively.

The Company’s rent expense under operating leases was $1.2 million and $1.3 million for the three months ended March 31, 2013 and 2012, respectively.

Litigation

The Company is subject to claims and legal proceedings that arise in the ordinary course of business. Each of these matters is inherently uncertain, and there can be no guarantee that the outcome of any such matter will be decided favorably to the Company or that the resolution of any such matter will not have a material adverse effect upon the Company’s business, condensed consolidated financial position, results of operations or cash flow. The Company does not believe that any of these pending claims and legal proceedings will have a material adverse effect on its business, condensed consolidated financial position, results of operations or cash flow.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Paragraph 8
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Topic 450
-SubTopic 20
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-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Share-Based Compensation

3 Months Ended

Mar. 31, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Share-Based Compensation

6. SHARE-BASED COMPENSATION

The Compensation Committee (the “Committee”) of the Board of Directors of PTGi administers PTGi’s Management Compensation Plan, as amended (the “Management Compensation Plan”). The Committee has broad authority to administer, construe and interpret the Management Compensation Plan; however, except in connection with certain Corporate Transactions (as defined in the Management Compensation Plan), it may not take any action with respect to an award that would be treated, for accounting purposes, as a “repricing” of an award unless the action is approved by the shareholders of PTGi.

The Management Compensation Plan provides for the grant of incentive stock options, nonqualified stock options, restricted stock, restricted stock units, and other stock-based or cash-based performance awards (collectively, “awards”). PTGi typically issues new shares of common stock upon the exercise of stock options, as opposed to using treasury shares.

The Company follows guidance which addresses the accounting for share-based payment transactions whereby an entity receives employee services in exchange for either equity instruments of the enterprise or liabilities that are based on the fair value of the enterprise’s equity instruments or that may be settled by the issuance of such equity instruments. The guidance generally requires that such transactions be accounted for using a fair-value based method and share-based compensation expense be recorded, based on the grant date fair value, estimated in accordance with the guidance, for all new and unvested stock awards that are ultimately expected to vest as the requisite service is rendered.

No options were granted during the three months ended March 31, 2013 and 2012.

Total share-based compensation expense recognized by the Company in the three months ended March 31, 2013 and 2012 was $0.5 million and $1.7 million, respectively. Most of PTGi’s stock awards vest ratably during the vesting period. The Company recognizes compensation expense for equity awards, reduced by estimated forfeitures, using the straight-line basis.

Restricted Stock Units (RSUs)

A summary of PTGi’s RSU activity during the three months ended March 31, 2013 is as follows:


	Shares			Weighted Average Grant Date Fair Value
Unvested – December 31, 2012		286,208		$	12.91
Granted		—		$	—
Vested		(123,526	)	$	10.87
Forfeitures		—		$	—

Unvested – March 31, 2013		162,682		$	14.46

As of March 31, 2013, PTGi had 0.2 million unvested RSUs outstanding with respect to $1.3 million of compensation expense that is expected to be recognized over the weighted average remaining vesting period of 1.1 years. The number of unvested RSUs expected to vest is 0.1 million.

Stock Options and Stock Appreciation Rights

A summary of PTGi’s stock option and stock appreciation rights activity during the three months ended March 31, 2013 is as follows:


	Shares			Weighted Average Exercise Price
Outstanding – December 31, 2012		212,244		$	9.24
Granted		—		$	—
Exercised		(1,176	)	$	8.91
Forfeitures		(1,982	)	$	8.91

Outstanding – March 31, 2013		209,086		$	9.24

Eligible for exercise		153,423		$	8.55

The following table summarizes the intrinsic values and remaining contractual terms of PTGi’s stock options and stock appreciation rights:


	Intrinsic Value		Weighted Average Remaining Life in Years
Options outstanding – March 31, 2013		460,403		7.8
Options exercisable – March 31, 2013		415,327		7.4

As of March 31, 2013, PTGi had approximately 56,000 unvested stock options and stock appreciation rights outstanding of which $0.2 million of compensation expense is expected to be recognized over the weighted average remaining period of 1.0 year. The number of unvested stock options and stock appreciation rights expected to vest is approximately 52,000 shares, with a weighted average remaining life of 7.8 years, a weighted average exercise price of $9.20, and an intrinsic value of approximately $45,000.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Stockholders' Equity

3 Months Ended

Mar. 31, 2013

Equity [Abstract]

Stockholders' Equity

7. STOCKHOLDERS’ EQUITY

As of March 31, 2013 and December 31, 2012, there were 13,906,948 and 13,933,529 shares of common stock outstanding, respectively.

Class A and B Warrants

In July 2009, PTGi issued (A) Class A warrants (the “Class A Warrants”) to purchase shares of PTGi’s common stock, which are divided into three separate series (Class A-1, Class A-2 and Class A-3 Warrants), each of which series consists of 1,000,000 warrants to purchase an original aggregate amount of up to 1,000,000 shares of PTGi common stock; and (B) Class B warrants (the “Class B Warrants” and, together with the Class A Warrants, the “Warrants”) to purchase an original aggregate amount of up to 1,500,000 shares of PTGi common stock. In connection with the issuance of the Warrants, PTGi entered into a Warrant Agreement for each of the Class A Warrants and the Class B Warrants, in each case with Broadridge Financial Solutions, Inc. (successor-in-interest to StockTrans, Inc.), as warrant agent. The original exercise price with respect to (i) the Class A-1 Warrants was $12.22 per share; (ii) the Class A-2 Warrants was $16.53 per share; (iii) the Class A-3 Warrants was $20.50 per share; and (iv) the Class B Warrants was $26.01 per share. The Warrants have a five-year term and will expire on July 1, 2014. A holder may exercise Warrants by paying the applicable exercise price in cash. In addition, a holder may exercise Warrants on a cashless basis in connection with a change of control (as defined in each of the Class A and Class B Warrant Agreement), in connection with a transaction pursuant to an effective registration statement covering the sale of PTGi common stock underlying such Warrants, or if the exercise occurs on a date when the daily volume-weighted average price of the PTGi common stock for the immediately preceding 10 trading days exceeds 150% of the exercise price applicable to such Warrants. The Warrants are freely transferrable by the holder thereof.

Antidilution adjustment provisions in each of the Class A Warrant Agreement and Class B Warrant Agreement provide that the number of shares of PTGi common stock issuable upon exercise of the Warrants and the exercise prices of the Warrants will be adjusted in connection with any dividend or distribution of PTGi common stock, assets or cash (other than any regular cash dividend not to exceed in any fiscal year 45% of the consolidated net income of the Company), or any subdivision or combination of the PTGi common stock. In addition, the number of shares of PTGi common stock issuable upon exercise of the Warrants and the exercise prices of the Warrants are also subject to adjustment in connection with any issuance, grant or sale to any person of (A) rights, warrants, options, exchangeable securities or convertible securities entitling such person to subscribe for, purchase or otherwise acquire shares of PTGi common stock at a price per share less than the fair market value of the PTGi common stock on the trading day immediately prior to such issuance, sale or grant, subject to certain exceptions, or (B) shares of PTGi common stock at a price per share less than the fair market value of the PTGi common stock on the trading day immediately prior to such issuance, sale or grant. Additionally, if any transaction or event occurs in which all or substantially all of the outstanding PTGi common stock is converted into, exchanged for, or the holders thereof are otherwise entitled to receive on account thereof stock, other securities, cash or assets (each, a “Fundamental Change Transaction”) the holder of each Warrant outstanding immediately prior to the occurrence of such Fundamental Change Transaction shall have the right to receive upon exercise of the applicable Warrant the kind and amount of stock, other securities, cash and/or assets that such holder would have received if such Warrant had been exercised.

The Dividends that occurred in 2012 (discussed below under “—Special Dividends”) triggered the antidilution adjustment provisions in the Warrant Agreements, such that (A) the exercise price with respect to (i) the Class A-1 Warrants was adjusted downward to $8.91, (ii) the Class A-2 Warrants was adjusted downward to $12.05, (iii) the Class A-3 Warrants was adjusted downward to $14.93, and (iv) the Class B Warrants was adjusted downward to $18.96; and (B) after taking into account exercised Warrants, the number of shares of PTGi common stock issuable upon exercise of (i) the Class A-1 Warrants was adjusted upward to 1,370,658, (ii) the Class A-2 Warrants was adjusted upward to 1,372,293, (iii) the Class A-3 Warrants was adjusted upward to 1,372,293, and (iv) the Class B Warrants was adjusted upward to 2,058,438. Due to the nature of the mandatory antidilution provisions applicable to the Warrants, the Company has evaluated the accounting impact of the modification accounting under ASC 718, and concluded that the modification of the terms of such instruments did not result in a significant change of fair value before and after the modification date.

Contingent Value Rights

In July 2009, the Company issued contingent value rights (“CVRs”), which allow holders to receive shares of PTGi common stock (subject to adjustment as described below, the “CVR Shares”), in an original aggregate amount of up to 2,665,000 shares. The CVRs may not be transferred by the holder thereof except in certain limited circumstances. Subject to the terms of the CVR Agreement governing the CVRs, holders of CVRs will receive their pro rata share of the CVR Shares if certain conditions are satisfied. A distribution of CVR Shares is required to be made by the Company if, as of any determination date (as described in the paragraph below), the Company’s equity value (assuming cash exercise in full on such date of in-the-money warrants and options of the Company) divided by the sum of the number of shares of PTGi common stock then issued and outstanding plus the number of shares of PTGi common stock underlying warrants, options and similar securities of the Company (other than CVRs) that are then in-the-money exceeds the CVR strike price (subject to adjustment as described below, the “CVR Strike Price”) in an original amount of $35.95. The aggregate number of such shares of PTGi common stock is referred to as the “Applicable Shares” and the per share amount of any such excess over the CVR Strike Price is referred to as the “Excess Equity Value Per Share.” If such a distribution is required, the number of CVR Shares to be distributed by the Company equals the product of Excess Equity Value Per Share multiplied by the number of Applicable Shares divided by the CVR Strike Price. Such product of Excess Equity Value Per Share and the number of Applicable Shares is referred to as the “Excess Equity Value.”

The Company will determine if and to the extent a distribution of CVR Shares is required (i) on January 1 and July 1 of each year, commencing on the first such date (but in no event later than July 1, 2013) on which data is available to confirm that the Company’s adjusted EBITDA for the immediately preceding four fiscal quarters is equal to at least $100 million, and (ii) upon the occurrence of certain change of control transactions involving the Company. Distributions of CVR Shares (if any) will be made within 45 calendar days of a determination by the Company that a distribution is required.

Notwithstanding the foregoing, no distribution of CVR Shares is required to be made by the Company unless Excess Equity Value exceeds $1 million as of any determination date.

Antidilution adjustment provisions in the CVR Agreement provide that the maximum number of CVR Shares and the CVR Strike Price will be adjusted from time to time in connection with any stock dividend or distribution, or subdivision, split, combination, reclassification or recapitalization of the PTGi common stock. In addition, if the Company distributes to holders of its common stock any of its assets (including but not limited to cash), securities or rights to purchase securities of the Company (other than any regular cash dividend not to exceed in any fiscal year 45% of the consolidated net income of the Company and its consolidated subsidiaries for the immediately preceding fiscal year), then the number of CVR Shares will be increased and the CVR Strike Price will be decreased, in each case pursuant to the terms of the CVR Agreement. Additionally, in case of any reclassification, merger, consolidation, capital reorganization or other change in the capital stock of the Company (other than in connection with certain change of control transactions involving the Company) in which all or substantially all of the outstanding shares of PTGi common stock are converted into or exchanged for stock, other securities or other property, the Company shall make appropriate provision so that the holders of CVRs shall thereafter be entitled to receive, at such time such holder would have otherwise been entitled to receive a distribution under the CVR Agreement, the kind and amount of stock and other securities and property having a value substantially equivalent to the value of PTGi common stock that the holders of CVRs would have been entitled to receive in connection with a distribution of CVR Shares immediately prior to such reclassification, merger, consolidation, reorganization or other change in the capital stock of the Company at a CVR Strike Price that, in each case, is reasonably determined by the Board of Directors of the Company after consultation with an independent valuation advisor to preserve, to the extent practicable, the intrinsic value of such CVR immediately prior to such event.

The CVRs will expire and the CVR Agreement will terminate upon the earliest to occur of: (1) the date upon which no further CVR Shares are available for distribution, (2) the consummation of certain change of control transactions (subject to any potential distribution of CVR Shares as a result thereof), and (3) July 1, 2019.

The Dividends that occurred in 2012 (discussed below under “—Special Dividends”) triggered the antidilution adjustment provisions in the CVR Agreement, such that (A) the CVR Strike Price was adjusted downward to $26.20 and (B) the maximum number of CVR Shares issuable with respect to the CVRs was adjusted upward to 3,657,157. Due to the nature of the mandatory antidilution provisions applicable to the CVRs, the Company has evaluated the accounting impact of the modification accounting under ASC 718 and concluded that the modification of the terms of such instruments did not result in a significant change of fair value before and after the modification date.

Special Dividends

During 2012, PTGi’s Board of Directors declared three special cash dividends (the “Dividends”) with respect to PTGi’s issued and outstanding common stock, as presented in the following table (Total Dividend amounts presented in thousands):

Special Cash Dividend Per Share

$1.00

$2.50

$0.50

Declaration Date

June 20, 2012

November 14, 2012

December 11, 2012

Holders of Record Date

July 2, 2012

November 27, 2012

December 21, 2012

Payment Date

July 16, 2012

December 11, 2012

December 28, 2012

Total Dividend

13,804

34,551

6,910

In addition, with respect to unvested RSUs and restricted stock, the Company recorded, at the time of each Dividend, a dividend equivalent equal to the amount of each Dividend per RSU or share of restricted stock, as applicable, to holders of RSUs and restricted stock amounting to $1.3 million. The payment of the dividend equivalent will occur upon vesting of the RSU or share of restricted stock. With respect to certain outstanding stock options, in connection with each Dividend, the Company reduced the exercise price and increased the number of shares of common stock issuable upon exercise of such options, in each case in order to prevent dilution of the rights of holders of awards as a result of the Dividends. Due to the nature of the discretionary antidilution provisions applicable to the RSUs, the Company has evaluated the accounting impact of the modification accounting under ASC 718 and concluded that the modification of the terms of such instruments did not result in a significant change in fair value before and after the modification date.

Stock Repurchase Program

On August 8, 2011, PTGi’s Board of Directors authorized a stock repurchase program of up to $15 million of its common stock through August 8, 2013. Under the stock repurchase program, the Company may repurchase common stock from time to time in the open-market, privately negotiated transactions or block trades. There is no guarantee as to the exact number of shares, if any, that the Company will repurchase. The stock repurchase program may be modified, terminated or extended at any time without prior notice. PTGi has established a committee consisting of its lead director, chief executive officer and chief financial officer to oversee the administration of the stock repurchase program. During the year ended December 31, 2011, the Company repurchased 31,626 shares at a weighted average price of $11.92 per share under the stock repurchase plan. There were no repurchases in the year ending December 31, 2012 or in the three months ending March 31, 2013.

- Definition

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(d),(e))
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-Name Accounting Standards Codification
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Section B
-Paragraph 7, 11A
-Chapter 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
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Reference 17: http://www.xbrl.org/2003/role/presentationRef
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-Number Topic 4
-Section E

Reference 20: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 21: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

Reference 22: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 3, 4, 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 23: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

Income Taxes

3 Months Ended

Mar. 31, 2013

Income Tax Disclosure [Abstract]

Income Taxes

8. INCOME TAXES

The Company conducts business globally, and as a result, PTGi or one or more of its subsidiaries files income tax returns in the United States federal jurisdiction and various state and foreign jurisdictions. In the normal course of business the Company is subject to examination by taxing authorities throughout the world.

The following table summarizes the open tax years for each major jurisdiction:


Jurisdiction	Open Tax Years
United States Federal		2002—2012
Canada		2004—2012
United Kingdom		2004—2012
Netherlands		2007—2012

The Company is currently under examination in Canada and certain other foreign tax jurisdictions, which, individually and in the aggregate, are not material.

The Company adopted the provisions of ASC No. 740, “Income Taxes” (“ASC 740”), on January 1, 2007. It is expected that the amount of unrecognized tax benefits, reflected in the Company’s financial statements, will change in the next twelve months; however, the Company does not expect the change to have a significant impact on the results of operations or the financial position of the Company. During the three months ended March 31, 2013, penalties and interest were immaterial. As of March 31, 2013, the gross unrecognized tax benefit on the balance sheet was $66.2 million.

As of February 28, 2011, and the completion of the merger of PTG Investments, a wholly owned subsidiary of the Company with and into Arbinet Corporation, the Company believes that an ownership change for tax purposes took place with respect to both PTGi and Arbinet. This conclusion is based on Schedule 13D and Schedule 13G filings concerning Company securities, as filed with the SEC. As a result of the ownership change, an annual limitation of $7.0 million is required under section 382 of the Company’s then-existing NOLs. This limitation is in addition to the NOL utilization limitation of approximately $1.6 million due to the July 1, 2009, ownership change. The annual limitation under section 382 of Arbinet then-existing NOLs is approximately $2.2 million.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

+ Details

Fair Value of Financial Instruments and Derivatives

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments and Derivatives

9. FAIR VALUE OF FINANCIAL INSTRUMENTS AND DERIVATIVES

The carrying amounts reported in the condensed consolidated balance sheets for cash and cash equivalents, restricted cash, accounts receivable and accounts payable approximate fair value due to relatively short periods to maturity. The estimated aggregate fair value of the Company’s debt, based on quoted market prices, was $128.5 million and $125.4 million at March 31, 2013 and December 31, 2012, respectively. The aggregate carrying value of the Company’s debt was $127.0 million and $127.0 million at March 31, 2013 and December 31, 2012, respectively.

See the table below for a summary of the Company’s financial instruments accounted for at fair value on a recurring basis:


			Fair Value as of March 31, 2013, using:
	March 31, 2013		Quoted prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Liabilities:
Contingent Value Rights (CVRs)	$	14,792		—		14,792		—

Total	$	14,792		—		14,792		—


			Fair Value as of December 31, 2012, using:
	December 31, 2012		Quoted prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Liabilities:
Contingent Value Rights (CVRs)	$	14,904		—		14,904		—

Total	$	14,904		—		14,904		—

The CVRs are marked to fair value at each balance sheet date. The change in value is reflected in our condensed consolidated statements of operations. Estimates of fair value represent the Company’s best estimates based on a pricing model using the following assumptions as of March 31, 2013: (1) expected life of 6.25 years; (2) risk-free rate of 1.08%; (3) expected volatility of 44.32%; (4) dividend yield of 0%; (5) exercise price of $26.20; (6) stock price of $11.05. Estimates of fair value represent the Company’s best estimates based on a pricing model using the following assumptions as of March 31, 2012: (1) expected life of 7.25 years; (2) risk-free rate of 1.66%; (3) expected volatility of 47.93%; (4) dividend yield of 0%; (5) exercise price of $35.95; (6) stock price of $16.08. During the three months ended March 31, 2013 and 2012, ($0.1) million and $7.2 million, respectively, of (income) expense was recognized as a result of marking the CVRs to their fair value.

See the table below for a summary of the Company’s financial instruments accounted for at fair value on a nonrecurring basis:


			Fair Value as of March 31, 2013, using:
	March 31, 2013		Quoted prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Goodwill	$	60,085		—		—		60,085
Trade names		27,000		—		—		27,000
Net assets held for sale		20,444		—		—		20,444

Total	$	107,529		—		—		107,529


			Fair Value as of December 31, 2012, using:
	December 31, 2012		Quoted prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Goodwill	$	60,744		—		—		60,744
Trade names		27,000		—		—		27,000
Net assets held for sale		15,762		—		—		15,762

Total	$	103,506		—		—		103,506

See Note 2—“Summary of Significant Accounting Policies—Goodwill and Other Intangible Assets” and “Summary of Significant Accounting Policies—Valuation of Long-lived Assets (Held for Sale)” for a discussion of the inputs and valuation techniques.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 825
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-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15B
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Number 159
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Number 107
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32, 33, 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Number 107
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Operating Segment and Related Information

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Operating Segment and Related Information

10. OPERATING SEGMENT AND RELATED INFORMATION

As of March 31, 2013, the Company has two reportable geographic segments—United States and Canada; and three reportable operating segments based on management’s organization of the enterprise—BLACKIRON Data, North America Telecom and Other. In 2012, as a result of the sale of its Australian segment and the classification of its ICS business unit as held for sale, the Company reorganized its remaining operating segments to better reflect its continuing operations. The BLACKIRON Data segment contains the pure data center operations in Canada, while the North America Telecom segment combines the retail telecom businesses in the United States and Canada. Other consists of non-core operations. The Company evaluates the performance of its segments and allocates resources to them based upon net revenue and income (loss) from operations. The accounting policies of the segments are the same as those described in the summary of significant accounting policies. Net revenue by geographic segment is reported on the basis of where services are provided. All intersegment revenues are eliminated. The Company has no single customer representing greater than 10% of its revenues.

Summary information with respect to the Company’s operating segments is as follows (in thousands):


	Three Months Ended March 31, 2013			Three Months Ended March 31, 2012
Net Revenue by Geographic Region
United States	$	7,814		$	10,096
Canada		53,069			57,906

Total	$	60,883		$	68,002

Net Revenue by Segment
BLACKIRON Data	$	9,633		$	8,197
North America Telecom		51,250			59,805

Total	$	60,883		$	68,002

Provision for Doubtful Accounts Receivable
BLACKIRON Data	$	53		$	7
North America Telecom		657			420

Total	$	710		$	427

Income (Loss) from Operations
BLACKIRON Data	$	1,301		$	1,330
North America Telecom		5,383			5,205

Total From Operating Segments		6,684			6,535
Corporate		(4,446	)		(6,834	)

Total	$	2,238		$	(299	)

Capital Expenditures
BLACKIRON Data	$	3,865		$	2,368
North America Telecom		2,642			2,649
Other (1)		9			2,971

Total From Operating Segments		6,516			7,988
Corporate		1			123

Total	$	6,517		$	8,111

(1)	“Other” includes capital expenditures from discontinued operations.

The above capital expenditures exclude assets acquired under terms of capital lease and vendor financing obligations.


	March 31, 2013		December 31, 2012
Property and Equipment – Net
BLACKIRON Data	$	33,750	$	31,998
North America Telecom		31,763		32,632

Total From Operating Segments		65,513		64,630
Corporate		685		685

Total	$	66,198	$	65,315


	March 31, 2013		December 31, 2012
Assets
BLACKIRON Data	$	38,354	$	36,108
North America Telecom		123,725		132,725
Other (1)		41,708		46,493

Total From Operating Segments		203,787		215,326
Corporate		84,001		85,864

Total	$	287,788	$	301,190

(1)	“Other” includes assets from discontinued operations.

The Company offers three main products—Retail Voice, Data/Internet and Retail VoIP. Net revenue information with respect to the Company’s products is as follows (in thousands):


	Three Months Ended March 31, 2013		Three Months Ended March 31, 2012
Retail Voice	$	34,115	$	42,676
Data/Internet		19,251		17,681
Retail VoIP		7,517		7,645

Total	$	60,883	$	68,002

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Discontinued Operations

3 Months Ended

Mar. 31, 2013

Discontinued Operations And Disposal Groups [Abstract]

Discontinued Operations

11. DISCONTINUED OPERATIONS

Discontinued Operations—year ended December 31, 2012

On May 31, 2012, the Company completed the previously announced sale of its Australian segment to M2 Telecommunications Group Ltd. (“M2”), an Australian telecommunications company, for approximately AUD$192.4 million (or approximately USD$195.7 million giving effect to a currency hedge that the Company put in place in connection with the transaction). The Company recorded a $98.6 million gain from the sale of this segment during the second quarter of 2012. In connection with the closing of the transaction, $9.8 million was retained from the purchase price and placed into escrow until May 31, 2013 for purposes of satisfying potential indemnification claims pursuant to the purchase agreement. The purchase price was also subject to a customary post-closing working capital adjustment. In the fourth quarter of 2012, the Company and M2 settled on a working capital adjustment and the escrow was released. The Company received $5.4 million and M2 received $4.4 million. The $4.4 million was recorded as an adjustment to the gain that was recorded in the second quarter of 2012, which resulted in a net gain for the year ended December 31, 2012 of 94.3 million.

On June 28, 2012, the Board of Directors of PTGi committed to dispose of the Company’s ICS business unit and as a result classified ICS as a discontinued operation. The Company continues to actively solicit a sale or other disposition of its ICS business unit. In conjunction with the commitment to dispose of ICS and classification of ICS as a discontinued operation, the Company evaluated the carrying value of ICS in the second quarter of 2012 which resulted in it being higher than its fair value less costs to sell by $10.3 million and have attributed such adjustment to the long-lived assets of ICS. As the adjustment is related to ICS, it is classified within Income (loss) from discontinued operations, net of tax on the consolidated statements of operations in the second quarter of 2012. The Company performed the same analysis as of March 31, 2013 and December 31, 2012 and determined that the fair value less costs to sell exceeded the carrying value and therefore no additional adjustment was required.

As a result of these events, the Company’s condensed consolidated financial statements reflect the Australian and ICS business units as discontinued operations for the three months ended March 31, 2013 and 2012. Accordingly, revenue, costs and expenses of the discontinued operations have been excluded from the respective captions in the condensed consolidated statements of operations. The net operating results of the discontinued operations have been reported, net of applicable income taxes as income or loss (where applicable) from discontinued operations. Additionally, the assets and liabilities of ICS have been classified as held for sale assets and liabilities and removed from the specific line items on the condensed consolidated balance sheets as of March 31, 2013 and December 31, 2012.

Summarized operating results of the discontinued operations are as follows (in thousands):


	Three Months Ended March 31, 2013			Three Months Ended March 31, 2012
Net revenue	$	58,789		$	166,690
Operating expenses		59,902			163,586

Income (loss) from operations		(1,113	)		3,104
Interest expense		—			(248	)
Interest income and other income (expense)		(55	)		154
Foreign currency transaction gain (loss)		(115	)		2,799

Income (loss) before income tax		(1,283	)		5,809
Income tax (expense) benefit		—			(1,197	)

Income (loss) from discontinued operations	$	(1,283	)	$	4,612

Summarized assets and liabilities of ICS classified as held for sale as of March 31, 2013 and December 31, 2012 are as follows (in thousands):


	March 31, 2013		December 31, 2012
Accounts receivable	$	16,076	$	16,070
Prepaid expenses and other current assets		3,347		4,196
Restricted cash		472		487
Long-lived assets		19,389		19,313

Assets held for sale	$	39,284	$	40,066

Accounts payable	$	7,163		10,580
Accrued interconnection costs		5,870		6,961
Accrued expenses and other liabilities		5,807		6,763

Liabilities held for sale	$	18,840	$	24,304

- Definition

The entire disclosure for the facts and circumstances leading to the completed or expected disposal, manner and timing of disposal, the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the segment in which the disposal group was reported, and the classification (whether sold or classified as held for sale) and carrying value of the assets and liabilities comprising the disposal group. Includes all disposal groups, including those classified as components of the entity (discontinued operations).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Topic 205
-SubTopic 20
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1012-107759

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2443-110228

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2941-110230

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 43-48
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Basic and Diluted Income (Loss) Per Common Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Basic and Diluted Income (Loss) Per Common Share

12. BASIC AND DILUTED INCOME (LOSS) PER COMMON SHARE

Basic income (loss) per common share is calculated by dividing income (loss) attributable to common stockholders by the weighted average common shares outstanding during the period. Diluted income per common share adjusts basic income per common share for the effects of potentially dilutive common share equivalents.

Potentially dilutive common shares include the dilutive effects of common shares issuable under the Management Compensation Plan, including stock options and restricted stock units (RSUs), using the treasury stock method, as well as CVRs and Warrants.

The Company had no dilutive common share equivalents during the three months ended March 31, 2013, due to the results of operations being a loss from continuing operations, net of tax. For the three months ended March 31, 2013, the following were potentially dilutive but were excluded from the calculation of diluted loss per common share due to their antidilutive effect:

•

0.4 million shares issuable upon exercise of stock options and RSUs under the Management Compensation Plan;

•

6.2 million shares issuable upon exercise of Warrants; and

•

3.7 million shares issuable upon exercise of CVRs.

The Company had no dilutive common share equivalents during the three months ended March 31, 2012, due to the results of operations being a loss from continuing operations, net of tax. For the three months ended March 31, 2012, the following were potentially dilutive but were excluded from the calculation of diluted loss per common share due to their antidilutive effect:

•

0.6 million shares issuable upon exercise of stock options and RSUs under the Management Compensation Plan;

•

4.5 million shares issuable upon exercise of Warrants; and

•

2.7 million shares issuable upon exercise of CVRs.

A calculation of basic income (loss) per common share to diluted income (loss) per common share is set forth below (in thousands, except per share amounts):


	Three Months Ended March 31, 2013			Three Months Ended March 31, 2012
Income (loss) from continuing operations, net of tax	$	(1,929	)	$	(11,470	)
Income (loss) from discontinued operations, net of tax		(1,283	)		4,612

Net income (loss) attributable to Primus Telecommunications Group, Incorporated-basic	$	(3,212	)	$	(6,858	)

Net income (loss) attributable to Primus Telecommunications Group, Incorporated-diluted	$	(3,212	)	$	(6,858	)

Weighted average common shares outstanding-basic		13,909			13,744

Weighted average common shares outstanding-diluted		13,909			13,744

Basic income (loss) per common share:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$	(0.14	)	$	(0.84	)
Income (loss) from discontinued operations		(0.09	)		0.34

Net income (loss) attributable to Primus Telecommunications Group, Incorporated	$	(0.23	)	$	(0.50	)

Diluted income (loss) per common share:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$	(0.14	)	$	(0.84	)
Income (loss) from discontinued operations		(0.09	)		0.34

Net income (loss) attributable to Primus Telecommunications Group, Incorporated	$	(0.23	)	$	(0.50	)

Related Party Transactions	3 Months Ended
Related Party Transactions	Mar. 31, 2013
Related Party Transactions [Abstract]
Related Party Transactions	13. RELATED PARTY TRANSACTIONS The Company had no transactions with related parties in the three months ended March 31, 2013 and 2012.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph b
-Article 3A

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph k
-Article 4

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 57
-Paragraph 1-4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Subsequent Events

3 Months Ended

Mar. 31, 2013

Subsequent Events [Abstract]

Subsequent Events

14. SUBSEQUENT EVENTS

Divestiture of BLACKIRON

On April 17, 2013, PTGi and PTCI entered into an equity purchase agreement (the “BLACKIRON Purchase Agreement”), with Rogers Communications Inc., a Canadian telecommunications company listed on the Toronto Stock Exchange, and Rogers Data Services Inc., a wholly owned subsidiary of Rogers Communications Inc. (“Rogers”), to sell to Rogers all of the outstanding equity of BLACKIRON Data ULC (“BLACKIRON”), a direct wholly owned subsidiary of PTCI, for approximately CAD$200 million (the “BLACKIRON Transaction”). The purchase price is subject to potential downward or upward post-closing adjustments based on net working capital and cash at closing. In addition, CAD$20 million of the purchase price was placed in escrow to be released 15 months after the closing date, subject to any deductions required to satisfy indemnification obligations of PTGi and PTCI under the BLACKIRON Purchase Agreement. The BLACKIRON Purchase Agreement also contains customary indemnification obligations, representations, warranties and covenants for a transaction of this nature. In addition, subject to certain exceptions, PTGi and its subsidiaries also agreed for a period of two years from the closing date to certain restrictions on competing with BLACKIRON as provided in the BLACKIRON Purchase Agreement. The BLACKIRON Transaction signed and closed on April 17, 2013. The BLACKIRON Transaction was approved by the Board of Directors of PTGi as well as the special committee of the Board of Directors of PTGi.

Pending Divestiture of North America Telecom

On May 10, 2013, PTGi announced that PTGi and each of PTHI, Primus Telecommunications International, Inc. (“PTII”) and Lingo Holdings, Inc. (“Lingo Holdings”, and together with PTHI and PTII, the “Sellers”), direct or indirect wholly owned subsidiaries of PTGi, entered into an equity purchase agreement dated as of May 10, 2013 (the “North America Telecom Purchase Agreement”) with PTUS, Inc. (“US Acquireco”) and PTCAN, Inc. (“CAN Acquireco” and together with US Acquireco, the “Purchasers”), affiliates of York Capital Management, an investment firm, to sell to the Purchasers all of the outstanding equity of each of Primus Telecommunications, Inc. (“PTI”), Lingo, Inc. (“Lingo”), iPrimus, USA, Inc. (“iPrimus”), 3620212 Canada Inc. (“Primus Canada”), Primus Telecommunications Canada Inc. (“PTCI”), Telesonic Communications Inc. (“Telesonic”), and Globility Communications Corporation (“Globility”, and together with PTI, Lingo, iPrimus, Primus Canada, PTCI and Telesonic, the “Companies”), indirect or direct wholly owned subsidiaries of PTGi, for approximately $129 million (the “North America Telecom Transaction”). The purchase price is subject to potential downward or upward post-closing adjustments based on net working capital and cash at closing. The North America Telecom Purchase Agreement contains customary indemnification obligations, representations, warranties and covenants for a transaction of this nature. Certain indemnification obligations are subject to a cap of approximately $12.9 million. In addition, the North America Telecom Purchase Agreement provides that the Sellers must, for 14 months after the closing of the North America Telecom Transaction, maintain a minimum balance of cash and cash equivalents necessary to satisfy PTGi’s indemnification obligations under the North America Telecom Purchase Agreement.

Pursuant to the terms of the North America Telecom Purchase Agreement, $6.45 million of the purchase price will be placed in escrow to be released 14 months after the closing date, subject to any deductions required to satisfy indemnification obligations of PTGi under the North America Telecom Purchase Agreement. In addition, $4 million of the purchase price will be placed in escrow to cover any payments required in connection with the post-closing working capital and cash adjustments, which escrow amount will be released when such adjustments are conclusively agreed upon. Furthermore, $4.8 million of the purchase price will be placed in escrow to cover certain tax liabilities, which escrow amount will be released after a positive ruling with respect to the underlying matter is received or 30 days after expiration of the applicable statute of limitations relating to the underlying matter.

The North America Telecom Purchase Agreement also contains certain termination rights for PTGi, the Sellers and the Purchasers, including the right of PTGi and the Sellers, in certain circumstances, to terminate the North America Telecom Purchase Agreement and accept a superior proposal. If the North America Telecom Purchase Agreement is terminated, in certain circumstances, the Sellers would be required to pay to the Purchasers reasonable costs and expenses incurred by the Purchasers of up to 1% of the purchase price or a termination fee equal to $3.87 million. In certain circumstances in which the North America Telecom Purchase Agreement is terminated or the Purchasers breach the North America Telecom Purchase Agreement, Purchasers would be required to pay to PTGi a reverse termination fee equal to $25 million as liquidated damages.

The Companies conduct PTGi’s North America retail telecommunications operations in the United States and Canada.

The transactions contemplated by the North America Telecom Purchase Agreement were approved by the Board of Directors of PTGi as well as the special committee of the Board of Directors of PTGi. The North America Telecom Transaction will require PTGi stockholder approval and regulatory approvals, and is subject to customary closing conditions. The North America Telecom Transaction is currently expected to close by the third quarter of the year ending December 31, 2013, with the exception of the sale of PTI. Subject to regulatory approvals, the sale of PTI is expected to close subsequent to the third quarter of the year ending December 31, 2013. Approximately $126 million, subject to any adjustments pursuant to the North America Telecom Purchase Agreement, is required to be paid on the initial closing, with the remainder to be paid upon closing of the sale of PTI.

The following unaudited pro forma consolidated financial information is presented to illustrate the effect of the Company’s disposition of BLACKIRON and North America Telecom on its historical financial position and operating results. The unaudited pro forma condensed consolidated balance sheet as of March 31, 2013 is based on the historical statements of the Company as of March 31, 2013 after giving effect to the transactions as if the dispositions had occurred on March 31, 2013. The unaudited pro forma condensed consolidated statements of operations for the three months ended March 31, 2013 and 2012 are based on the historical financial statements of the Company after giving effect to the transactions as if the dispositions had occurred on January 1, 2012.

PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEETS


	As Reported March 31, 2013			Pro Forma Adjustments									Pro Forma March 31, 2013
	As Reported March 31, 2013			BLACKIRON Data Operations (a)			North America Telecom Operations (b)			Other Adjustments			Pro Forma March 31, 2013
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	13,844		$	(327	)	$	(4,672	)	$	170,651	(c)	$	291,634
											112,138	(d)
Accounts receivable, prepaid expenses and other current assets		23,937			(2,790	)		(20,360	)		—			787
Assets held for sale		39,284			—			—			—			39,284

Total current assets		77,065			(3,117	)		(25,032	)		282,789			331,705
RESTRICTED CASH		832			(74	)		(758	)		—			—
PROPERTY AND EQUIPMENT – Net		66,198			(33,750	)		(31,763	)		—			685
GOODWILL		60,085			(912	)		(32,500	)		(26,673	) (e)		—
OTHER INTANGIBLE ASSETS – Net		60,265			(503	)		(32,762	)		(27,000	) (f)		—
OTHER ASSETS		23,343			—			(909	)		19,556	(g)		57,240
											15,250	(h)

TOTAL ASSETS	$	287,788		$	(38,356	)	$	(123,724	)	$	263,922		$	389,630

LIABILITIES AND STOCKHOLDERS’ EQUITY
CURRENT LIABILITIES:
Accounts payable, accrued interconnection costs, accrued expenses and other current liabilities	$	30,872		$	(8,054	)	$	(20,446	)	$	—		$	2,372
Deferred revenue		8,293			(544	)		(7,749	)		—			—
Accrued income taxes		7,701			—			(3,464	)		—			4,237
Accrued interest		4,926			—			(31	)		—			4,895
Current portion of long-term obligations		54			(29	)		(25	)		—			—
Liabilities held for sale		18,840			—			—			—			18,840

Total current liabilities		70,686			(8,627	)		(31,715	)		—			30,344
LONG-TERM OBLIGATIONS		127,069			(26	)		(824	)		—			126,219
CONTINGENT VALUE RIGHTS		14,792			—			—			—			14,792
OTHER LIABILITIES		12,142			—			(1,215	)		(10,503	) (f)		35,230
											19,556	(g)
											15,250	(h)

Total liabilities		224,689			(8,653	)		(33,754	)		24,303			206,585
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS’ EQUITY:
Preferred stock		—			—			—			—			—
Common stock		14			—			—			—			14
Additional paid-in capital		98,662			—			—			—			98,662
Accumulated deficit		(26,410	)		(29,703	)		(89,970	)		170,651	(c)		93,536
											112,138	(d)
											(26,673	) (e)
											(16,497	) (f)
Treasury stock, at cost		(378	)		—			—			—			(378	)
Accumulated other comprehensive loss		(8,789	)		—			—			—			(8,789	)

Total stockholders’ equity		63,099			(29,703	)		(89,970	)		239,619			183,045

TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	287,788		$	(38,356	)	$	(123,724	)	$	263,922		$	389,630

See accompanying notes to unaudited pro forma condensed consolidated financial statements.

PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS


	As Reported Three Months Ended March 31, 2013			Pro Forma Adjustments						Pro Forma Three Months Ended March 31, 2013
	As Reported Three Months Ended March 31, 2013			BLACKIRON Data Operations (i)			North America Telecom Operations (j)			Pro Forma Three Months Ended March 31, 2013
NET REVENUE	$	60,883		$	(9,633	)	$	(51,250	)	$	—
OPERATING EXPENSES
Cost of revenue (exclusive of depreciation included below)		29,470			(4,438	)		(25,032	)		—
Selling, general and administrative		22,575			(2,227	)		(15,903	)		4,445
Depreciation and amortization		6,600			(1,667	)		(4,932	)		1

Total operating expenses		58,645			(8,332	)		(45,867	)		4,446

INCOME (LOSS) FROM OPERATIONS		2,238			(1,301	)		(5,383	)		(4,446	)
INTEREST EXPENSE		(4,216	)		1			81			(4,134	)
ACCRETION (AMORTIZATION) ON DEBT PREMIUM/DISCOUNT, net		(32	)		—			—			(32	)
GAIN (LOSS) FROM CONTINGENT VALUE RIGHTS VALUATION		112			—			—			112
INTEREST INCOME AND OTHER INCOME (EXPENSE), net		18			(1	)		(18	)		(1	)
FOREIGN CURRENCY TRANSACTION GAIN (LOSS)		1			—			77			78

INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		(1,879	)		(1,301	)		(5,243	)		(8,423	)
INCOME TAX BENEFIT (EXPENSE)		(50	)		(168	)		107			(111	)

INCOME (LOSS) FROM CONTINUING OPERATIONS		(1,929	)		(1,469	)		(5,136	)		(8,534	)
Less: Net (income) loss attributable to the noncontrolling interest		—			—			—			—

INCOME (LOSS) FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON SHAREHOLDERS OF PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED	$	(1,929	)	$	(1,469	)	$	(5,136	)	$	(8,534	)

BASIC INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$	(0.14	)							$	(0.61	)

DILUTED INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$	(0.14	)							$	(0.61	)

WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic		13,909									13,909

Diluted		13,909									13,909

See accompanying notes to unaudited pro forma condensed consolidated financial statements.

PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS


	As Reported Three Months Ended March 31, 2012			Pro Forma Adjustments						Pro Forma Three Months Ended March 31, 2012
	As Reported Three Months Ended March 31, 2012			BLACKIRON Data Operations (i)			North America Telecom Operations (j)			Pro Forma Three Months Ended March 31, 2012
NET REVENUE	$	68,002		$	(8,197	)	$	(59,805	)	$	—
OPERATING EXPENSES
Cost of revenue (exclusive of depreciation included below)		33,505			(3,377	)		(30,128	)		—
Selling, general and administrative		27,156			(1,310	)		(19,056	)		6,790
Depreciation and amortization		7,597			(2,180	)		(5,416	)		1
(Gain) loss on sale or disposal of assets		43			—			—			43

Total operating expenses		68,301			(6,867	)		(54,600	)		6,834

INCOME (LOSS) FROM OPERATIONS		(299	)		(1,330	)		(5,205	)		(6,834	)
INTEREST EXPENSE		(6,879	)		—			62			(6,817	)
ACCRETION (AMORTIZATION) ON DEBT PREMIUM/DISCOUNT, net		(57	)		—			—			(57	)
GAIN (LOSS) FROM CONTINGENT VALUE RIGHTS VALUATION		(7,190	)		—			—			(7,190	)
INTEREST INCOME AND OTHER INCOME (EXPENSE), net		4			—			104			108
FOREIGN CURRENCY TRANSACTION GAIN (LOSS)		1,951			—			(71	)		1,880

INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		(12,470	)		(1,330	)		(5,110	)		(18,910	)
INCOME TAX BENEFIT (EXPENSE)		1,106			—			(1,352	)		(246	)

INCOME (LOSS) FROM CONTINUING OPERATIONS		(11,364	)		(1,330	)		(6,462	)		(19,156	)
Less: Net (income) loss attributable to the noncontrolling interest		(106	)		—			—			(106	)

INCOME (LOSS) FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON SHAREHOLDERS OF PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED	$	(11,470	)	$	(1,330	)	$	(6,462	)	$	(19,262	)

BASIC INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$	(0.84	)							$	(1.40	)

DILUTED INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$	(0.84	)							$	(1.40	)

WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic		13,744									13,744

Diluted		13,744									13,744

See accompanying notes to unaudited pro forma condensed consolidated financial statements.

PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED

NOTES TO UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Pro Forma Adjustments

The unaudited pro forma condensed consolidated balance sheet as of March 31, 2013 includes the following adjustments:

(a)

To reflect the disposition of BLACKIRON’s specified balance sheet accounts as of March 31, 2013.

(b)

To reflect the disposition of North America Telecom’s specified balance sheet accounts as of March 31, 2013.

(c)

To reflect the cash received from Rogers Communications Inc. for the sale of BLACKIRON, net of transaction costs directly related to the sale and amounts deposited into escrow.

(d)

To reflect the cash received from York Capital Management for the sale of North America Telecom, net of transaction costs directly related to the sale and amounts deposited into escrow.

(e)

To reflect the impairment of the remaining carrying value of goodwill of the US reporting unit. The fair value of goodwill is measured by the operations of the US retail portion of the North America Telecom operating segment.

(f)

To reflect the sale of the Company’s trade names attributable to North America Telecom, net of deferred taxes, to York Capital Management.

(g)

To reflect the amount of proceeds deposited into escrow and deferral of gain on the BLACKIRON sale.

(h)

To reflect the amount of proceeds deposited into escrow and deferral of gain on the North America Telecom sale.

The unaudited pro forma condensed consolidated statements of operations for the three months ended March 31, 2013 and 2012 include the following adjustments:

(i)

To reflect the removal of the operating results of BLACKIRON as if the transaction occurred on January 1, 2012.

(j)

To reflect the removal of the operating results of North America Telecom as if the transaction occurred on January 1, 2012.

Separation Agreement with Peter D. Aquino

On April 26, 2013, the Company announced that Peter D. Aquino, who has served as our Executive Chairman since January 2013, resigned from all positions with the Company, effective April 30, 2013. In connection with Mr. Aquino’s resignation, the Company entered into a Separation and Release Agreement (the “Separation Agreement”) with Mr. Aquino. Pursuant to the Separation Agreement, Mr. Aquino’s employment with the Company is deemed terminated without cause for purposes of that certain Employment Agreement, dated October 12, 2010 (as amended on January 17, 2013, the “Employment Agreement”), between Mr. Aquino and the Company, and Mr. Aquino became entitled to the following severance benefits: (i) severance pay equal to $2,800,000, such payment to be made in a lump sum on May 15, 2013; (ii) a bonus in the amount of $750,000, payable in a lump sum on May 15, 2013; (iii) all outstanding stock options and other grants (including all amounts or RSUs payable or granted under Mr. Aquino’s short term incentive awards pursuant to the Employment Agreement), as applicable, becoming 100% vested and exercisable, payable or deliverable (as applicable) in accordance with their terms, which resulted in (A) the accelerated vesting of 41,586 unvested RSUs held by Mr. Aquino and a payment of $166,344 for dividend equivalents accrued with respect to such unvested RSUs and (B) a payment of $2,872,500 with respect to Mr. Aquino’s unpaid short term incentive awards, payable in a lump sum on May 15, 2013, and (iv) if Mr. Aquino elects to continue his health insurance under COBRA, the Company will pay the COBRA premiums until April 30, 2014. The Separation Agreement also contains customary release and non-disparagement provisions. The Separation Agreement terminates and supersedes the Employment Agreement, except for the provisions of the Employment Agreement addressing confidentiality, competitive activities and inventions.

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2013
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation—The condensed consolidated financial statements include the Company’s accounts, its wholly owned subsidiaries and all other subsidiaries over which the Company exerts control. Prior to July 31, 2012, the Company owned 45.6% of Globility Communications Corporation (“Globility”) through direct and indirect ownership structures. As a result of changes to the Telecommunications Act in Canada, the Company is no longer restricted by Canadian foreign ownership laws. Given these changes, Primus Telecommunications International, Inc. (“PTII”) purchased the remaining 54.4% of Globility on July 31, 2012. Prior to the purchase of the remaining 54.4%, the results of Globility and its subsidiary are consolidated with the Company’s results based on guidance from the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) No. 810, “Consolidation” (“ASC 810”). All intercompany profits, transactions and balances have been eliminated in consolidation.
Discontinued Operations	Discontinued Operations—In the second quarter of 2012, the Company sold its Australian segment and committed to dispose of and is actively soliciting a sale or other disposition of its International Carrier Services (“ICS”) business unit. The Company has applied retrospective adjustments for the three months ended March 31, 2012 to reflect the effects of the discontinued operations that occurred during 2012. Accordingly, revenue, costs and expenses of the discontinued operations have been excluded from the respective captions in the condensed consolidated statements of operations. Additionally, the assets and liabilities of ICS have been classified as held for sale assets and liabilities and removed from the specific line items on the condensed consolidated balance sheets as of March 31, 2013 and December 31, 2012. See Note 11—“Discontinued Operations,” for further information regarding these transactions.
Property and Equipment	Property and Equipment—Property and equipment are recorded at cost less accumulated depreciation, which is provided on the straight-line method over the estimated useful lives of the assets. Cost includes major expenditures for improvements and replacements which extend useful lives or increase capacity of the assets as well as expenditures necessary to place assets into readiness for use. Expenditures for maintenance and repairs are expensed as incurred. The estimated useful lives of property and equipment are as follows: network equipment—5 to 8 years, fiber optic and submarine cable—8 to 25 years, furniture and equipment—5 years, and leasehold improvements and leased equipment—shorter of lease or useful life. Costs for internal use software that are incurred in the preliminary project stage and in the post-implementation stage are expensed as incurred. Costs incurred during the application development stage are capitalized and amortized over the estimated useful life of the software.
Business Combinations	Business Combinations—The Company is required to allocate the purchase price of acquired companies to the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values. This valuation requires management to make significant estimates and assumptions, especially with respect to intangible assets associated with such assets. Critical estimates in valuing certain of the intangible assets and subsequently assessing the realizability of such assets include, but are not limited to, future expected cash flows from the revenues, customer contracts and discount rates. Management’s estimates of fair value are based on assumptions believed to be reasonable but which are inherently uncertain and unpredictable. Assumptions may be incomplete or inaccurate and unanticipated events and circumstances may occur.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets—Under ASC No. 350, “Intangibles—Goodwill and Other” (“ASC 350”), goodwill and indefinite lived intangible assets are not amortized but are reviewed annually for impairment, or more frequently, if impairment indicators arise. Intangible assets that have finite lives are amortized over their estimated useful lives and are subject to the provisions of ASC No. 360, “Property, Plant and Equipment” (“ASC 360”). Goodwill impairment is tested at least annually (October 1^st) or when factors indicate potential impairment using a two-step process that begins with an estimation of the fair value of each reporting unit. Step 1 is a screen for potential impairment pursuant to which the estimated fair value of each reporting unit is compared to its carrying value. The Company estimates the fair values of each reporting unit by a combination of (i) estimation of the discounted cash flows of each of the reporting units based on projected earnings in the future (the income approach) and (ii) a comparative analysis of revenue and EBITDA multiples of public companies in similar markets (the market approach). If there is a deficiency (the estimated fair value of a reporting unit is less than its carrying value), a Step 2 test is required. Step 2 measures the amount of impairment loss, if any, by comparing the implied fair value of the reporting unit’s goodwill with its carrying amount. The implied fair value of goodwill is determined in the same manner as the amount of goodwill recognized in a business combination is determined; i.e., through an allocation of the fair value of a reporting unit to all of the assets and liabilities of that unit as if the reporting unit had been acquired in a business combination. If the carrying amount of the reporting unit goodwill exceeds the implied fair value of that goodwill, an impairment loss shall be recognized in an amount equal to that excess. The Company also may utilize the provisions of Accounting Standards Update (“ASU”) No. 2011-08, “Testing Goodwill for Impairment” (“ASU 2011-08”), which allows the Company to use qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. The Company’s reporting units in 2011 were Australia, Canada and US/ICS. In May 2012, the Australian reporting unit was sold, and the reporting units were Canada and US/ICS. Subsequent to classifying ICS as a discontinued operation in the second quarter of 2012, the remaining reporting units are Canada and US. Estimating the fair value of a reporting unit requires various assumptions including projections of future cash flows, perpetual growth rates and discount rates. The assumptions about future cash flows and growth rates are based on the Company’s assessment of a number of factors, including the reporting unit’s recent performance against budget, performance in the market that the reporting unit serves, and industry and general economic data from third party sources. Discount rate assumptions are based on an assessment of the risk inherent in those future cash flows. Changes to the underlying businesses could affect the future cash flows, which in turn could affect the fair value of the reporting unit. Intangible assets not subject to amortization consist of certain trade names. Such indefinite lived intangible assets are tested for impairment annually, or more frequently if events or changes in circumstances indicate that the asset might be impaired. The impairment test shall consist of a comparison of the fair value of an intangible asset with its carrying amount. If the carrying amount of the intangible asset exceeds its fair value, an impairment loss shall be recognized in an amount equal to the excess. Intangible assets subject to amortization consist of certain trade names and customer relationships. These finite lived intangible assets are amortized based on their estimated useful lives. Such assets are subject to the impairment provisions of ASC 360, wherein impairment is recognized and measured only if there are events and circumstances that indicate that the carrying amount may not be recoverable. The carrying amount is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use of the asset group. An impairment loss is recorded if after determining that it is not recoverable, the carrying amount exceeds the fair value of the asset. In addition to the foregoing, the Company reviews its goodwill and intangible assets for possible impairment whenever events or circumstances indicate that the carrying amounts of assets may not be recoverable. The factors that the Company considers important, and which could trigger an impairment review, include, but are not limited to: a significant decline in the market value of our common stock or debt securities for a sustained period; a material adverse change in economic, financial market, industry or sector trends; a material failure to achieve operating results relative to historical levels or projected future levels; and significant changes in operations or business strategy. The current carrying values by reporting unit of the goodwill and other indefinite-lived intangible assets are disclosed in Note 3—“Goodwill and Other Intangible Assets.”
Valuation of Long-lived Assets (Held for Sale)	Valuation of Long-lived Assets (Held for Sale)—In conjunction with the Company’s commitment to dispose of its ICS business, it classified the net assets of ICS as held for sale and is required to measure them at the lower of carrying value or fair value less costs to sell. The Company makes significant assumptions and estimates in the process of determining fair value regarding matters that are inherently uncertain, such as estimating future cash flows, discount rates and growth rates. The resulting cash flows are projected over an extended period of time, which subjects those assumptions and estimates to an even larger degree of uncertainty. While the Company believes that its estimates are reasonable, different assumptions could materially affect the valuation of the net assets of ICS. The current year analysis of carrying value and fair value less costs to sell is disclosed in Note 11—“Discontinued Operations.”
Derivative Instruments	Derivative Instruments— Pursuant to the terms of the Company’s 2009 bankruptcy reorganization (the “Reorganization Plan”), the Company issued to holders of the Company’s pre-Reorganization Plan common stock contingent value rights (“CVRs”) to receive shares of Company common stock (subject to adjustment, the “CVR Shares”) in an original aggregate amount of up to 2,665,000 shares. In connection with the issuance of the CVRs, the Company entered into a Contingent Value Rights Distribution Agreement (the “CVR Agreement”), in favor of holders of CVRs thereunder, dated as of July 1, 2009. As a result of the special cash Dividends discussed in Note 7—“Stockholders’ Equity,” antidilution provisions in the CVR Agreement were triggered and the maximum aggregate number of CVR Shares issuable with respect to the CVRs was adjusted upward from 2,665,000 shares to 3,657,157 shares while the strike price with respect to the CVRs was adjusted downward from $35.95 to $26.20. Due to the nature of the CVRs, the Company accounted for the instrument in accordance with ASC No. 815, “Derivatives and Hedging” (“ASC 815”), as well as related interpretations of this standard. The Company determined the CVRs to be derivative instruments to be accounted for as liabilities and marked to fair value at each balance sheet date. Upon issuance, the Company estimated the fair value of its CVRs using a pricing model and consequently recorded a liability of $2.6 million in the balance sheet caption “other liabilities” as part of fresh-start accounting. Post-issuance change in value is reflected in the consolidated statements of operations as gain (loss) from contingent value rights valuation. The Company’s estimates of fair value of its CVRs are correlated to and reflective of PTGi’s common stock price trends; in general, as the value of PTGi’s common stock increases, the estimated fair value of the CVRs also increases and, as a result, the Company recognizes a change in value of its CVRs as loss from contingent value rights valuation. Conversely and also in general, as the value of PTGi’s common stock decreases, the estimated fair value of the CVRs also decreases and as a result the Company recognizes a change in value of the CVRs as gain from contingent value rights valuation. See Note 9—“Fair Value of Financial Instruments and Derivatives.”
Use of Estimates	Use of Estimates—The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of net revenue and expenses during the reporting period. Actual results may differ from these estimates. Significant estimates include allowance for doubtful accounts receivable, accrued interconnection cost disputes, the fair value of derivatives, market assumptions used in estimating the fair values of certain assets and liabilities, the calculation used in determining the fair value of PTGi’s stock options required by ASC No. 718, “Compensation—Stock Compensation” (“ASC 718”), income taxes and various tax contingencies. Estimates of fair value represent the Company’s best estimates developed with the assistance of independent appraisals or various valuation techniques and, where the foregoing have not yet been completed or are not available, industry data and trends and by reference to relevant market rates and transactions. The estimates and assumptions are inherently subject to significant uncertainties and contingencies beyond the control of the Company. Accordingly, the Company cannot provide assurance that the estimates, assumptions, and values reflected in the valuations will be realized, and actual results could vary materially. Any adjustments to the recorded fair values of these assets and liabilities, as related to business combinations and subsequent impairment assessment of goodwill, may impact the amount of recorded goodwill.
Reclassification	Reclassification—Certain previous year amounts have been reclassified to conform with current year presentations, as related to the reporting of the Company’s discontinued operations. In addition, certain amounts in selling, general and administrative expense related to our BLACKIRON Data operating segment were reclassified to cost of revenue as part of the Company’s new operating segment structure discussed in Note 10—“Operating Segment and Related Information.”
Newly Adopted Accounting Principles	Newly Adopted Accounting Principles In February 2013, an update was issued to the Comprehensive Income Topic No. 220, ASU 2013-02, “Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income,” which requires entities to disclose additional information about items reclassified out of accumulated other comprehensive income (“AOCI”). ASU 2013-02 does not change the current U.S. GAAP requirements, for either public or nonpublic entities, for interim financial statement reporting of comprehensive income. That is, a total for comprehensive income must be reported in condensed interim financial statements in either (1) a single continuous statement or (2) two separate but consecutive statements. Entities should disclose the changes in AOCI balances by component. Both before-tax and net-of-tax presentations of the information are acceptable as long as an entity presents the income tax benefit or expense attributed to each component of other comprehensive income and reclassification adjustments in either the financial statements or the notes to the financial statements. Entities should also disclose significant items reclassified out of AOCI by component either on the face of the income statement or as a separate footnote to the financial statements. On January 1, 2013, the Company adopted this update, which did not have a material impact on the condensed consolidated financial statements. In January 2013, an update was issued to the Balance Sheet Topic ASC No. 210 to clarify the scope of the offsetting disclosure requirements of ASU 2011-11, “Disclosures about Offsetting Assets and Liabilities.” Under ASU 2013-01, “Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities,” the disclosure requirements would apply to derivative instruments accounted for in accordance with ASC 815, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending arrangements that are either offset on the balance sheet or subject to an enforceable master netting arrangement or similar agreement. On January 1, 2013, the Company adopted this update, which did not have a material impact on the condensed consolidated financial statements. Retrospective application is required for all comparative periods presented. In July 2012, an update was issued to the Intangibles—Goodwill and Other Topic ASC No. 350, ASU 2012-02, “Testing Indefinite-Lived Intangible Assets for Impairment,” which provides guidance to all entities, both public and nonpublic, that have indefinite-lived intangible assets, other than goodwill, reported in their financial statements. Under the amendments in this update, an entity has the option first to assess qualitative factors to determine whether the existence of events and circumstances indicates that it is more likely than not that the indefinite-lived intangible asset is impaired. If, after assessing the totality of events and circumstances, an entity concludes that it is not more likely than not that the indefinite-lived intangible asset is impaired, then the entity is not required to take further action. However, if an entity concludes otherwise, then it is required to determine the fair value of the indefinite-lived intangible asset and perform the quantitative impairment test by comparing the fair value with the carrying amount. An entity has the option to bypass the qualitative assessment for any indefinite-lived intangible asset in any period and proceed directly to performing the quantitative impairment test. An entity will be able to resume performing the qualitative assessment in any subsequent period. On January 1, 2013, the Company adopted this update, which did not have a material impact on the condensed consolidated financial statements. In December 2011, an update was issued to the Balance Sheet Topic ASC No. 210, ASU 2011-11, “Disclosures about Offsetting Assets and Liabilities,” which contains new disclosure requirements regarding the nature of an entity’s right of setoff and related arrangements associated with its financial instruments and derivative instruments. The new disclosures are designed to make financial statements that are prepared under U.S. GAAP more comparable to those prepared under International Financial Reporting Standards (“IFRSs”). Generally, it is more difficult to qualify for offsetting under IFRSs than it is under U.S. GAAP because under U.S. GAAP certain derivative and repurchase agreement arrangements are granted exceptions from the general offsetting model. As a result, entities with significant financial instrument and derivative portfolios that report under IFRSs typically present positions on their balance sheets that are significantly larger than those of entities with similarly sized portfolios whose financial statements are prepared in accordance with U.S. GAAP. To facilitate comparison between financial statements prepared under U.S. GAAP and IFRSs, the new disclosures will give financial statement users information about both gross and net exposures. On January 1, 2013, the Company adopted this update, which did not have a material impact on the condensed consolidated financial statements. New Accounting Pronouncements In March 2013, an update was issued to the Foreign Currency Matters Topic No. 830, ASU 2013-05, “Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity,” which indicates that the entire amount of a cumulative translation adjustment related to an entity’s investment in a foreign entity should be released when there has been a (1) sale of a subsidiary or group of net assets within a foreign entity and the sale represents the substantially complete liquidation of the investment in the foreign entity; (2) loss of a controlling financial interest in an investment in a foreign entity; or (3) step acquisition for a foreign entity. Early adoption is permitted and this accounting update should be applied prospectively from the beginning of the fiscal year of adoption. The Company’s effective date for adoption is January 1, 2014. The Company does not foresee this accounting update having a material effect on its condensed consolidated financial statements in future periods, although that could change.

Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets Not Subject to Amortization

The Company’s intangible assets not subject to amortization consisted of the following (in thousands):


	March 31, 2013		December 31, 2012
Goodwill	$	60,085	$	60,744
Trade names	$	27,000	$	27,000

Goodwill

The changes in the carrying amount of goodwill by reporting unit for the three months ended March 31, 2013 are as follows (in thousands):


	United States		Canada			Total
Balance as of December 31, 2012	$	26,582	$	34,162		$	60,744
Effect of change in foreign currency exchange rates		—		(659	)		(659	)

Balance as of March 31, 2013	$	26,582	$	33,503		$	60,085

Intangible Assets Subject to Amortization

Intangible assets subject to amortization consisted of the following (in thousands):


	March 31, 2013							December 31, 2012
	Gross Carrying Amount		Accumulated Amortization			Net Book Value		Gross Carrying Amount		Accumulated Amortization			Net Book Value
Trade names	$	3,500	$	(1,226	)	$	2,274	$	3,500	$	(1,140	)	$	2,360
Customer relationships		92,405		(61,414	)		30,991		94,142		(60,478	)		33,664

Total	$	95,905	$	(62,640	)	$	33,265	$	97,642	$	(61,618	)	$	36,024

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References + Details

Long-Term Obligations (Tables)

3 Months Ended

Mar. 31, 2013

Debt Disclosure [Abstract]

Long-Term Obligations

Long-term obligations consisted of the following (in thousands):


	March 31, 2013			December 31, 2012
Obligations under capital leases and other	$	80		$	101
13% Senior Secured Notes due 2016		2,403			2,403
10% Senior Secured Notes due 2017		12,692			12,692
10% Senior Secured Exchange Notes due 2017		112,587			112,587

Subtotal	$	127,762		$	127,783
Original issue discount on Senior Secured Notes		(639	)		(671	)

Subtotal	$	127,123		$	127,112
Less: Current portion of long-term obligations		(54	)		(66	)

Total long-term obligations	$	127,069		$	127,046

Contractual Payments of Principal and Interest for Company's Long-Term Obligations

The following table reflects the contractual payments of principal and interest for the Company’s long-term obligations as of March 31, 2013:


Year Ending December 31,	Capital Leases and Other			13% Senior Secured Notes due 2016			10% Senior Secured Notes due 2017			10% Senior Secured Exchange Notes due 2017			Total
2013 (as of March 31, 2013)	$	51		$	312		$	1,269		$	10,383		$	12,015
2014		30			312			1,269			11,259			12,870
2015		6			312			1,269			11,259			12,846
2016		—			2,716			1,269			11,259			15,244
2017		—			—			13,327			118,217			131,544
Thereafter		—			—			—			—			—

Total minimum principal & interest payments		87			3,652			18,403			162,377			184,519
Less: Amount representing interest		(7	)		(1,249	)		(5,711	)		(49,790	)		(56,757	)

Total long-term obligations	$	80		$	2,403		$	12,692		$	112,587		$	127,762

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

+ Details

Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

Commitments And Contingencies Disclosure [Abstract]

Purchase Obligations and Non-Cancellable Operating Leases, Including Continuing Obligations of Discontinued Operations


Year Ending December 31,	Purchase Obligations		Operating Leases
2013 (as of March 31, 2013)	$	3,786	$	8,703
2014		4,335		8,814
2015		413		7,320
2016		373		6,234
2017		373		5,696
Thereafter		932		14,070

Total long-term obligations	$	10,212	$	50,837

Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Company's Restricted Stock Units

A summary of PTGi’s RSU activity during the three months ended March 31, 2013 is as follows:


	Shares			Weighted Average Grant Date Fair Value
Unvested – December 31, 2012		286,208		$	12.91
Granted		—		$	—
Vested		(123,526	)	$	10.87
Forfeitures		—		$	—

Unvested – March 31, 2013		162,682		$	14.46

Summary of Company's Stock Options and Stock Appreciation Rights

A summary of PTGi’s stock option and stock appreciation rights activity during the three months ended March 31, 2013 is as follows:


	Shares			Weighted Average Exercise Price
Outstanding – December 31, 2012		212,244		$	9.24
Granted		—		$	—
Exercised		(1,176	)	$	8.91
Forfeitures		(1,982	)	$	8.91

Outstanding – March 31, 2013		209,086		$	9.24

Eligible for exercise		153,423		$	8.55

Intrinsic Values and Remaining Contractual Terms of Company's Stock Options and Stock Appreciation Rights

The following table summarizes the intrinsic values and remaining contractual terms of PTGi’s stock options and stock appreciation rights:


	Intrinsic Value		Weighted Average Remaining Life in Years
Options outstanding – March 31, 2013		460,403		7.8
Options exercisable – March 31, 2013		415,327		7.4

Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2013

Equity [Abstract]

Summary of Special Cash Dividends

Special Cash Dividend Per Share

$1.00

$2.50

$0.50

Declaration Date

June 20, 2012

November 14, 2012

December 11, 2012

Holders of Record Date

July 2, 2012

November 27, 2012

December 21, 2012

Payment Date

July 16, 2012

December 11, 2012

December 28, 2012

Total Dividend

13,804

34,551

6,910

Income Taxes (Tables)

3 Months Ended

Mar. 31, 2013

Income Tax Disclosure [Abstract]

Open Tax Years for Each Major Jurisdiction

The following table summarizes the open tax years for each major jurisdiction:


Jurisdiction	Open Tax Years
United States Federal		2002—2012
Canada		2004—2012
United Kingdom		2004—2012
Netherlands		2007—2012

Fair Value of Financial Instruments and Derivatives (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Summary of Company's Financial Instruments Accounted for at Fair Value on Recurring Basis

See the table below for a summary of the Company’s financial instruments accounted for at fair value on a recurring basis:


			Fair Value as of March 31, 2013, using:
	March 31, 2013		Quoted prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Liabilities:
Contingent Value Rights (CVRs)	$	14,792		—		14,792		—

Total	$	14,792		—		14,792		—


			Fair Value as of December 31, 2012, using:
	December 31, 2012		Quoted prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Liabilities:
Contingent Value Rights (CVRs)	$	14,904		—		14,904		—

Total	$	14,904		—		14,904		—

Summary of Company's Financial Instruments Accounted for at Fair Value on Nonrecurring Basis

See the table below for a summary of the Company’s financial instruments accounted for at fair value on a nonrecurring basis:


			Fair Value as of March 31, 2013, using:
	March 31, 2013		Quoted prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Goodwill	$	60,085		—		—		60,085
Trade names		27,000		—		—		27,000
Net assets held for sale		20,444		—		—		20,444

Total	$	107,529		—		—		107,529


			Fair Value as of December 31, 2012, using:
	December 31, 2012		Quoted prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Goodwill	$	60,744		—		—		60,744
Trade names		27,000		—		—		27,000
Net assets held for sale		15,762		—		—		15,762

Total	$	103,506		—		—		103,506

- Definition

Tabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

+ References + Details

Operating Segment and Related Information (Tables)

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Summary of Company's Operating Segments

Summary information with respect to the Company’s operating segments is as follows (in thousands):


	Three Months Ended March 31, 2013			Three Months Ended March 31, 2012
Net Revenue by Geographic Region
United States	$	7,814		$	10,096
Canada		53,069			57,906

Total	$	60,883		$	68,002

Net Revenue by Segment
BLACKIRON Data	$	9,633		$	8,197
North America Telecom		51,250			59,805

Total	$	60,883		$	68,002

Provision for Doubtful Accounts Receivable
BLACKIRON Data	$	53		$	7
North America Telecom		657			420

Total	$	710		$	427

Income (Loss) from Operations
BLACKIRON Data	$	1,301		$	1,330
North America Telecom		5,383			5,205

Total From Operating Segments		6,684			6,535
Corporate		(4,446	)		(6,834	)

Total	$	2,238		$	(299	)

Capital Expenditures
BLACKIRON Data	$	3,865		$	2,368
North America Telecom		2,642			2,649
Other (1)		9			2,971

Total From Operating Segments		6,516			7,988
Corporate		1			123

Total	$	6,517		$	8,111

(1)	“Other” includes capital expenditures from discontinued operations.

The above capital expenditures exclude assets acquired under terms of capital lease and vendor financing obligations.


	March 31, 2013		December 31, 2012
Property and Equipment – Net
BLACKIRON Data	$	33,750	$	31,998
North America Telecom		31,763		32,632

Total From Operating Segments		65,513		64,630
Corporate		685		685

Total	$	66,198	$	65,315


	March 31, 2013		December 31, 2012
Assets
BLACKIRON Data	$	38,354	$	36,108
North America Telecom		123,725		132,725
Other (1)		41,708		46,493

Total From Operating Segments		203,787		215,326
Corporate		84,001		85,864

Total	$	287,788	$	301,190

(1)	“Other” includes assets from discontinued operations.

Net Revenue Information with Respect to Company's Products

The Company offers three main products—Retail Voice, Data/Internet and Retail VoIP. Net revenue information with respect to the Company’s products is as follows (in thousands):


	Three Months Ended March 31, 2013		Three Months Ended March 31, 2012
Retail Voice	$	34,115	$	42,676
Data/Internet		19,251		17,681
Retail VoIP		7,517		7,645

Total	$	60,883	$	68,002

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References + Details

Discontinued Operations (Tables)

3 Months Ended

Mar. 31, 2013

Discontinued Operations And Disposal Groups [Abstract]

Summarized Operating Results of Discontinued Operations

Summarized operating results of the discontinued operations are as follows (in thousands):


	Three Months Ended March 31, 2013			Three Months Ended March 31, 2012
Net revenue	$	58,789		$	166,690
Operating expenses		59,902			163,586

Income (loss) from operations		(1,113	)		3,104
Interest expense		—			(248	)
Interest income and other income (expense)		(55	)		154
Foreign currency transaction gain (loss)		(115	)		2,799

Income (loss) before income tax		(1,283	)		5,809
Income tax (expense) benefit		—			(1,197	)

Income (loss) from discontinued operations	$	(1,283	)	$	4,612

Summarized assets and liabilities of ICS classified as held for sale as of March 31, 2013 and December 31, 2012 are as follows (in thousands):


	March 31, 2013		December 31, 2012
Accounts receivable	$	16,076	$	16,070
Prepaid expenses and other current assets		3,347		4,196
Restricted cash		472		487
Long-lived assets		19,389		19,313

Assets held for sale	$	39,284	$	40,066

Accounts payable	$	7,163		10,580
Accrued interconnection costs		5,870		6,961
Accrued expenses and other liabilities		5,807		6,763

Liabilities held for sale	$	18,840	$	24,304

- Definition

Tabular disclosure of disposal groups, which may include the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the classification and carrying value of the assets and liabilities comprising the disposal group, and the segment in which the disposal group was reported. Also may include the amount of adjustments to amounts previously reported in discontinued operations such as resolution of contingencies arising from the disposal transaction or the operations of the component prior to disposal.

+ References + Details

Basic and Diluted Income (Loss) Per Common Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Basic Income (Loss) Per Common Share to Diluted Income (Loss) Per Common Share

A calculation of basic income (loss) per common share to diluted income (loss) per common share is set forth below (in thousands, except per share amounts):


	Three Months Ended March 31, 2013			Three Months Ended March 31, 2012
Income (loss) from continuing operations, net of tax	$	(1,929	)	$	(11,470	)
Income (loss) from discontinued operations, net of tax		(1,283	)		4,612

Net income (loss) attributable to Primus Telecommunications Group, Incorporated-basic	$	(3,212	)	$	(6,858	)

Net income (loss) attributable to Primus Telecommunications Group, Incorporated-diluted	$	(3,212	)	$	(6,858	)

Weighted average common shares outstanding-basic		13,909			13,744

Weighted average common shares outstanding-diluted		13,909			13,744

Basic income (loss) per common share:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$	(0.14	)	$	(0.84	)
Income (loss) from discontinued operations		(0.09	)		0.34

Net income (loss) attributable to Primus Telecommunications Group, Incorporated	$	(0.23	)	$	(0.50	)

Diluted income (loss) per common share:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$	(0.14	)	$	(0.84	)
Income (loss) from discontinued operations		(0.09	)		0.34

Net income (loss) attributable to Primus Telecommunications Group, Incorporated	$	(0.23	)	$	(0.50	)

Subsequent Events (Tables)

3 Months Ended

Mar. 31, 2013

Subsequent Events [Abstract]

Schedule of Condensed Consolidated Balance Sheets

PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEETS


	As Reported March 31, 2013			Pro Forma Adjustments									Pro Forma March 31, 2013
	As Reported March 31, 2013			BLACKIRON Data Operations (a)			North America Telecom Operations (b)			Other Adjustments			Pro Forma March 31, 2013
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	13,844		$	(327	)	$	(4,672	)	$	170,651	(c)	$	291,634
											112,138	(d)
Accounts receivable, prepaid expenses and other current assets		23,937			(2,790	)		(20,360	)		—			787
Assets held for sale		39,284			—			—			—			39,284

Total current assets		77,065			(3,117	)		(25,032	)		282,789			331,705
RESTRICTED CASH		832			(74	)		(758	)		—			—
PROPERTY AND EQUIPMENT – Net		66,198			(33,750	)		(31,763	)		—			685
GOODWILL		60,085			(912	)		(32,500	)		(26,673	) (e)		—
OTHER INTANGIBLE ASSETS – Net		60,265			(503	)		(32,762	)		(27,000	) (f)		—
OTHER ASSETS		23,343			—			(909	)		19,556	(g)		57,240
											15,250	(h)

TOTAL ASSETS	$	287,788		$	(38,356	)	$	(123,724	)	$	263,922		$	389,630

LIABILITIES AND STOCKHOLDERS’ EQUITY
CURRENT LIABILITIES:
Accounts payable, accrued interconnection costs, accrued expenses and other current liabilities	$	30,872		$	(8,054	)	$	(20,446	)	$	—		$	2,372
Deferred revenue		8,293			(544	)		(7,749	)		—			—
Accrued income taxes		7,701			—			(3,464	)		—			4,237
Accrued interest		4,926			—			(31	)		—			4,895
Current portion of long-term obligations		54			(29	)		(25	)		—			—
Liabilities held for sale		18,840			—			—			—			18,840

Total current liabilities		70,686			(8,627	)		(31,715	)		—			30,344
LONG-TERM OBLIGATIONS		127,069			(26	)		(824	)		—			126,219
CONTINGENT VALUE RIGHTS		14,792			—			—			—			14,792
OTHER LIABILITIES		12,142			—			(1,215	)		(10,503	) (f)		35,230
											19,556	(g)
											15,250	(h)

Total liabilities		224,689			(8,653	)		(33,754	)		24,303			206,585
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS’ EQUITY:
Preferred stock		—			—			—			—			—
Common stock		14			—			—			—			14
Additional paid-in capital		98,662			—			—			—			98,662
Accumulated deficit		(26,410	)		(29,703	)		(89,970	)		170,651	(c)		93,536
											112,138	(d)
											(26,673	) (e)
											(16,497	) (f)
Treasury stock, at cost		(378	)		—			—			—			(378	)
Accumulated other comprehensive loss		(8,789	)		—			—			—			(8,789	)

Total stockholders’ equity		63,099			(29,703	)		(89,970	)		239,619			183,045

TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	287,788		$	(38,356	)	$	(123,724	)	$	263,922		$	389,630

Schedule of Condensed Consolidated Statement of Operations

PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS


	As Reported Three Months Ended March 31, 2013			Pro Forma Adjustments						Pro Forma Three Months Ended March 31, 2013
	As Reported Three Months Ended March 31, 2013			BLACKIRON Data Operations (i)			North America Telecom Operations (j)			Pro Forma Three Months Ended March 31, 2013
NET REVENUE	$	60,883		$	(9,633	)	$	(51,250	)	$	—
OPERATING EXPENSES
Cost of revenue (exclusive of depreciation included below)		29,470			(4,438	)		(25,032	)		—
Selling, general and administrative		22,575			(2,227	)		(15,903	)		4,445
Depreciation and amortization		6,600			(1,667	)		(4,932	)		1

Total operating expenses		58,645			(8,332	)		(45,867	)		4,446

INCOME (LOSS) FROM OPERATIONS		2,238			(1,301	)		(5,383	)		(4,446	)
INTEREST EXPENSE		(4,216	)		1			81			(4,134	)
ACCRETION (AMORTIZATION) ON DEBT PREMIUM/DISCOUNT, net		(32	)		—			—			(32	)
GAIN (LOSS) FROM CONTINGENT VALUE RIGHTS VALUATION		112			—			—			112
INTEREST INCOME AND OTHER INCOME (EXPENSE), net		18			(1	)		(18	)		(1	)
FOREIGN CURRENCY TRANSACTION GAIN (LOSS)		1			—			77			78

INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		(1,879	)		(1,301	)		(5,243	)		(8,423	)
INCOME TAX BENEFIT (EXPENSE)		(50	)		(168	)		107			(111	)

INCOME (LOSS) FROM CONTINUING OPERATIONS		(1,929	)		(1,469	)		(5,136	)		(8,534	)
Less: Net (income) loss attributable to the noncontrolling interest		—			—			—			—

INCOME (LOSS) FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON SHAREHOLDERS OF PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED	$	(1,929	)	$	(1,469	)	$	(5,136	)	$	(8,534	)

BASIC INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$	(0.14	)							$	(0.61	)

DILUTED INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$	(0.14	)							$	(0.61	)

WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic		13,909									13,909

Diluted		13,909									13,909

See accompanying notes to unaudited pro forma condensed consolidated financial statements.

PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS


	As Reported Three Months Ended March 31, 2012			Pro Forma Adjustments						Pro Forma Three Months Ended March 31, 2012
	As Reported Three Months Ended March 31, 2012			BLACKIRON Data Operations (i)			North America Telecom Operations (j)			Pro Forma Three Months Ended March 31, 2012
NET REVENUE	$	68,002		$	(8,197	)	$	(59,805	)	$	—
OPERATING EXPENSES
Cost of revenue (exclusive of depreciation included below)		33,505			(3,377	)		(30,128	)		—
Selling, general and administrative		27,156			(1,310	)		(19,056	)		6,790
Depreciation and amortization		7,597			(2,180	)		(5,416	)		1
(Gain) loss on sale or disposal of assets		43			—			—			43

Total operating expenses		68,301			(6,867	)		(54,600	)		6,834

INCOME (LOSS) FROM OPERATIONS		(299	)		(1,330	)		(5,205	)		(6,834	)
INTEREST EXPENSE		(6,879	)		—			62			(6,817	)
ACCRETION (AMORTIZATION) ON DEBT PREMIUM/DISCOUNT, net		(57	)		—			—			(57	)
GAIN (LOSS) FROM CONTINGENT VALUE RIGHTS VALUATION		(7,190	)		—			—			(7,190	)
INTEREST INCOME AND OTHER INCOME (EXPENSE), net		4			—			104			108
FOREIGN CURRENCY TRANSACTION GAIN (LOSS)		1,951			—			(71	)		1,880

INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		(12,470	)		(1,330	)		(5,110	)		(18,910	)
INCOME TAX BENEFIT (EXPENSE)		1,106			—			(1,352	)		(246	)

INCOME (LOSS) FROM CONTINUING OPERATIONS		(11,364	)		(1,330	)		(6,462	)		(19,156	)
Less: Net (income) loss attributable to the noncontrolling interest		(106	)		—			—			(106	)

INCOME (LOSS) FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON SHAREHOLDERS OF PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED	$	(11,470	)	$	(1,330	)	$	(6,462	)	$	(19,262	)

BASIC INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$	(0.84	)							$	(1.40	)

DILUTED INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$	(0.84	)							$	(1.40	)

WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic		13,744									13,744

Diluted		13,744									13,744

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2013	Jul. 31, 2012	Jul. 02, 2012	Jul. 01, 2009
Globility Communications Corporation [Member]
Related Party Transaction [Line Items]
Percentage ownership through direct and indirect ownership structures		45.60%
Globility Canada [Member]
Related Party Transaction [Line Items]
Purchase of Globility in Canada		54.40%
Contingent value rights ("CVRs") [Member]
Related Party Transaction [Line Items]
Total common stock shares issued			3,657,157	2,665,000
Price per common stock shares issued			$ 26.20	$ 35.95
Estimated fair value recorded in "other liabilities"				$ 2.6
Fiber optic and submarine cable [Member] \| Minimum [Member]
Related Party Transaction [Line Items]
Estimated useful lives of property and equipment	8 years
Fiber optic and submarine cable [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Estimated useful lives of property and equipment	25 years
Network equipment [Member] \| Minimum [Member]
Related Party Transaction [Line Items]
Estimated useful lives of property and equipment	5 years
Network equipment [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Estimated useful lives of property and equipment	8 years
Furniture and equipment [Member]
Related Party Transaction [Line Items]
Estimated useful lives of property and equipment	5 years

Goodwill and Other Intangible Assets - Intangible Assets Not Subject to Amortization (Detail) - USD ($) $ in Thousands	Mar. 31, 2013	Dec. 31, 2012
Goodwill And Intangible Assets Disclosure [Abstract]
GOODWILL	$ 60,085	$ 60,744
Trade names	$ 27,000	$ 27,000

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 72
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-Clause 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph l
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Goodwill and Other Intangible Assets - Goodwill (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2013 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 60,744
Effect of change in foreign currency exchange rates	(659)
Goodwill, Ending Balance	60,085
United States [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	26,582
Effect of change in foreign currency exchange rates
Goodwill, Ending Balance	26,582
Canada [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	34,162
Effect of change in foreign currency exchange rates	(659)
Goodwill, Ending Balance	$ 33,503

- Definition

+ References

+ Details

Goodwill and Other Intangible Assets - Intangible Assets Subject to Amortization (Detail) - USD ($) $ in Thousands	Mar. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 95,905	$ 97,642
Accumulated Amortization	(62,640)	(61,618)
Net Book Value	33,265	36,024
Trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,500	3,500
Accumulated Amortization	(1,226)	(1,140)
Net Book Value	2,274	2,360
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	92,405	94,142
Accumulated Amortization	(61,414)	(60,478)
Net Book Value	$ 30,991	$ 33,664

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense for trade names and customer relationships	$ 2.1	$ 2.8
Remainder of 2013	6.2
2014	6.1
2015	4.6
2016	3.6
2017	2.8
Thereafter	$ 10.0

Long-Term Obligations - Long-Term Obligations (Detail) - USD ($) $ in Thousands	Mar. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Obligations under capital leases and other	$ 80	$ 101
Subtotal	127,762	127,783
Original issue discount on Senior Secured Notes	(639)	(671)
Subtotal	127,123	127,112
Less: Current portion of long-term obligations	(54)	(66)
Total long-term obligations	127,069	127,046
13% Senior Secured Notes due 2016 [Member]
Debt Instrument [Line Items]
Senior Secured Notes	2,403	2,403
10% Senior Secured Notes due 2017 [Member]
Debt Instrument [Line Items]
Senior Secured Notes	12,692	12,692
10% Senior Secured Exchange Notes due 2017 [Member]
Debt Instrument [Line Items]
Senior Secured Notes	$ 112,587	$ 112,587

Long-Term Obligations - Long-Term Obligations (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2013
13% Senior Secured Notes due 2016 [Member]
Debt Instrument [Line Items]
Senior secured, percentage	13.00%
Senior Secured Notes Maturity Year	2016
10% Senior Secured Notes due 2017 [Member]
Debt Instrument [Line Items]
Senior secured, percentage	10.00%
Senior Secured Notes Maturity Year	2017
10% Senior Secured Exchange Notes due 2017 [Member]
Debt Instrument [Line Items]
Senior secured, percentage	10.00%
Senior Secured Notes Maturity Year	2017

Long-Term Obligations - Contractual Payments of Principal and Interest for Company's Long-Term Obligations (Detail) $ in Thousands	Mar. 31, 2013 USD ($)
Debt Instrument [Line Items]
2013	$ 51
2014	30
2015	6
2016
2017
Thereafter
Total minimum principal & interest payments	87
Less: Amount representing interest	(7)
Total long-term obligations	80
2013	12,015
2014	12,870
2015	12,846
2016	15,244
2017	131,544
Thereafter
Total minimum principal & interest payments	184,519
Less: Amount representing interest	(56,757)
Total long-term obligations	127,762
13% Senior Secured Notes due 2016 [Member]
Debt Instrument [Line Items]
2013	312
2014	312
2015	312
2016	2,716
Thereafter
Total minimum principal & interest payments	3,652
Less: Amount representing interest	(1,249)
Total long-term obligations	2,403
10% Senior Secured Notes due 2017 [Member]
Debt Instrument [Line Items]
2013	1,269
2014	1,269
2015	1,269
2016	1,269
2017	13,327
Thereafter
Total minimum principal & interest payments	18,403
Less: Amount representing interest	(5,711)
Total long-term obligations	12,692
10% Senior Secured Exchange Notes due 2017 [Member]
Debt Instrument [Line Items]
2013	10,383
2014	11,259
2015	11,259
2016	11,259
2017	118,217
Thereafter
Total minimum principal & interest payments	162,377
Less: Amount representing interest	(49,790)
Total long-term obligations	$ 112,587

Long-Term Obligations - Additional Information (Detail) - USD ($)	1 Months Ended		3 Months Ended
	Dec. 19, 2012	Nov. 14, 2012	Mar. 31, 2013	Sep. 30, 2011	Sep. 17, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Restructuring of debt				$ 6,900,000
Percentage of redemption from aggregate principal amount			100.00%
Non U S subsidiaries [Member]
Debt Instrument [Line Items]
Capital stock held by foreign subsidiary			65.00%
14 1/4% Senior Subordinated Secured Notes due 2013 [Member]
Debt Instrument [Line Items]
Senior Secured Notes			14.25%
13% Senior Secured Notes due 2016 [Member]
Debt Instrument [Line Items]
Principal amount outstanding			$ 2,400,000
Senior Secured Notes			13.00%
Installment period of Notes payable in cash			June 15 and December 15 of each year
Senior Secured Notes, maturity date			Dec. 16, 2016
10% Senior Secured Notes due 2017 [Member]
Debt Instrument [Line Items]
Principal amount outstanding			$ 12,700,000
Senior Secured Notes			10.00%
Installment period of Notes payable in cash			April 15 and October 15 of each year
Senior Secured Notes, maturity date			Apr. 15, 2017
Aggregate principal amount issued	$ 23,800,000	$ 86,900,000	$ 240,200,000
Aggregate principal amount issued pursuant to Exchange Offers			228,600,000
Aggregate principal amount exchanged pursuant			$ 11,600,000
Percentage of redemption from aggregate principal amount			35.00%
Percentage of redemption premium			110.00%
Repurchase of Notes at a purchase price			100.00%
Selling of notes at a purchase price			100.00%
Aggregate principal amount					$ 119,000,000	$ 5,000,000
Purchase price in cash					109.00%
Premiums and other costs			$ 10,900,000
Deferred financing costs			9,500,000
Original issue discount included in gain (loss) on early extinguishment or restructuring of debt			700,000
Percentage of face value						99.00%
Aggregate principal amount exchanged			112,600,000
Premium paid to exchanging holders			$ 9,100,000
10% Senior Secured Exchange Notes due 2017 [Member]
Debt Instrument [Line Items]
Senior Secured Notes			10.00%
Aggregate principal amount exchanged	$ 25,700,000	$ 79,700,000
Restricted payment on notes			$ 50,000,000

Commitments and Contingencies - Purchase Obligations and Non-Cancellable Operating Leases, Including Continuing Obligations of Discontinued Operations (Detail) $ in Thousands	Mar. 31, 2013 USD ($)
Purchase Obligations
2013 (as of March 31, 2013)	$ 3,786
2014	4,335
2015	413
2016	373
2017	373
Thereafter	932
Total long-term obligations	10,212
Operating Leases
2013 (as of March 31, 2013)	8,703
2014	8,814
2015	7,320
2016	6,234
2017	5,696
Thereafter	14,070
Total long-term obligations	$ 50,837

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Commitments And Contingencies Disclosure [Abstract]
Purchase commitments	$ 1.3	$ 2.7
Rent expense	$ 1.2	$ 1.3

Share-Based Compensation - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense recognized	$ 500,000	$ 1,700,000
RSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested outstanding	162,682		286,208
Compensation expense	$ 1,300,000
Weighted average remaining period	1 year 1 month 6 days
Unvested shares expected to vest	100,000
Stock Options and Stock Appreciation Rights [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining period	1 year
Unvested stock options and stock appreciation rights outstanding	56,000
Compensation expense	$ 200,000
Unvested shares expected to vest	52,000
Weighted average remaining life	7 years 9 months 18 days
Weighted average exercise price	$ 9.20
Intrinsic value	$ 45,000

Share-Based Compensation - Summary of Company's Restricted Stock Units (Detail) - RSU [Member]	3 Months Ended
	Mar. 31, 2013 $ / shares shares
Summary of Company's restricted stock units, Shares
Shares, Beginning Balance, Unvested \| shares	286,208
Shares, Granted \| shares
Shares, Vested \| shares	(123,526)
Shares, Forfeitures \| shares
Shares, Ending Balance, Unvested \| shares	162,682
Summary of Company's restricted stock units, Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Unvested, Beginning balance \| $ / shares	$ 12.91
Weighted Average Grant Date Fair Value, Granted \| $ / shares
Weighted Average Grant Date Fair Value, Vested \| $ / shares	10.87
Weighted Average Grant Date Fair Value, Forfeitures \| $ / shares
Weighted Average Grant Date Fair Value, Unvested, Ending balance \| $ / shares	$ 14.46

Share-Based Compensation - Summary of Company's Stock Options and Stock Appreciation Rights (Detail) - Stock Options and Stock Appreciation Rights [Member]	3 Months Ended
	Mar. 31, 2013 $ / shares shares
Summary of Company's stock options and stock appreciation rights, Shares
Shares Outstanding, Beginning Balance \| shares	212,244
Shares, Granted \| shares
Shares, Exercised \| shares	(1,176)
Shares, Forfeitures \| shares	(1,982)
Shares Outstanding, Ending Balance \| shares	209,086
Shares, Eligible for exercise \| shares	153,423
Summary of Company's stock options and stock appreciation rights, Weighted Average Exercise Price
Weighted Average Exercise Price, Outstanding, Beginning Balance \| $ / shares	$ 9.24
Weighted Average Exercise Price, Granted \| $ / shares
Weighted Average Exercise Price, Exercised \| $ / shares	8.91
Weighted Average Exercise Price, Forfeitures \| $ / shares	8.91
Weighted Average Exercise Price, Outstanding, Ending Balance \| $ / shares	9.24
Weighted Average Exercise Price, Eligible for exercise \| $ / shares	$ 8.55

Share-Based Compensation - Intrinsic Values and Remaining Contractual Terms of Company's Stock Options and Stock Appreciation Rights (Detail)	3 Months Ended
	Mar. 31, 2013 USD ($)
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Intrinsic Value, Options outstanding	$ 460,403
Intrinsic Value, Options exercisable	$ 415,327
Weighted Average Remaining Life in Years, Options outstanding	7 years 9 months 18 days
Weighted Average Remaining Life in Years, Options exercisable	7 years 4 months 24 days

Stockholders' Equity - Additional Information (Detail) $ / shares in Units, $ in Millions	1 Months Ended			3 Months Ended	12 Months Ended
	Aug. 08, 2011 USD ($)	Jul. 09, 2009 shares	Jul. 01, 2009 d $ / shares $ / Warrant shares	Mar. 31, 2013 USD ($) $ / shares shares	Dec. 31, 2012 USD ($) shares	Dec. 31, 2011 $ / shares shares
Common stock, shares outstanding				13,906,948	13,933,529
Expiry date of Warrants			Jul. 01, 2014
Trading days \| d			10
Weighted average price of common stock exceeding exercise price.			150.00%
Percentage cash dividend from net income				45.00%
Dividend equivalent amount of each Dividend per RSU or share of restricted stock \| $				$ 1.3
Stock repurchase program \| $	$ 15.0
Shares repurchased						31,626
Weighted average price \| $ / shares						$ 11.92
Contingent Value Rights (CVRs) [Member]
Shares issued to contingent value rights		2,665,000
Strike price \| $ / shares			$ 35.95
Company EBITDA \| $					$ 100.0
Distribution of CVR shares					45 days
Excess Equity Value exceeds \| $				$ 1.0
Decrease in Strike Price per share \| $ / shares				$ 26.20
Increase in number of Shares				3,657,157
Class A-1 [Member]
Number of warrants entitled for purchase			1,000,000
Exercise price per share \| $ / Warrant			12.22
Decrease in exercise price per share \| $ / shares				$ 8.91
Increase in number of warrants entitled for purchase				1,370,658
Class A-2 [Member]
Number of warrants entitled for purchase			1,000,000
Exercise price per share \| $ / Warrant			16.53
Decrease in exercise price per share \| $ / shares				$ 12.05
Increase in number of warrants entitled for purchase				1,372,293
Class A-3 [Member]
Number of warrants entitled for purchase			1,000,000
Exercise price per share \| $ / Warrant			20.50
Decrease in exercise price per share \| $ / shares				$ 14.93
Increase in number of warrants entitled for purchase				1,372,293
Class A warrants [Member]
Aggregate amount of common stock			1,000,000
Class B warrants [Member]
Aggregate amount of common stock			1,500,000
Exercise price per share \| $ / Warrant			26.01
Class B [Member]
Decrease in exercise price per share \| $ / shares				$ 18.96
Increase in number of warrants entitled for purchase				2,058,438

Stockholders' Equity - Summary of Special Cash Dividends (Detail) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2013 USD ($) $ / shares
$1.00 Special Cash Dividend Per Share [Member]
Dividends Payable [Line Items]
Special Cash Dividend Per Share \| $ / shares	$ 1.00
Declaration Date	Jun. 20, 2012
Holders of Record Date	Jul. 02, 2012
Payment Date	Jul. 16, 2012
Total Dividend \| $	$ 13,804
$2.50 Special Cash Dividend Per Share [Member]
Dividends Payable [Line Items]
Special Cash Dividend Per Share \| $ / shares	$ 2.50
Declaration Date	Nov. 14, 2012
Holders of Record Date	Nov. 27, 2012
Payment Date	Dec. 11, 2012
Total Dividend \| $	$ 34,551
$0.50 Special Cash Dividend Per Share [Member]
Dividends Payable [Line Items]
Special Cash Dividend Per Share \| $ / shares	$ 0.50
Declaration Date	Dec. 11, 2012
Holders of Record Date	Dec. 21, 2012
Payment Date	Dec. 28, 2012
Total Dividend \| $	$ 6,910

Income Taxes - Open Tax Years for Each Major Jurisdiction (Detail)	3 Months Ended
	Mar. 31, 2013
United States [Member]
Income Tax Contingency [Line Items]
Open tax years beginning	2002
Open tax years ending	2012
Canada [Member]
Income Tax Contingency [Line Items]
Open tax years beginning	2004
Open tax years ending	2012
United Kingdom [Member]
Income Tax Contingency [Line Items]
Open tax years beginning	2004
Open tax years ending	2012
Netherlands [Member]
Income Tax Contingency [Line Items]
Open tax years beginning	2007
Open tax years ending	2012

Income Taxes - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2013 USD ($)
Income Taxes Disclosure [Line Items]
Gross unrecognized tax benefits	$ 66.2
Annual limitation on ownership change	7.0
Additional annual limitations to NOL	1.6
Arbinet Corporation Acquisition [Member]
Income Taxes Disclosure [Line Items]
Net operating loss carryforwards subject to annual limitation	$ 2.2

Fair Value of Financial Instruments and Derivatives - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated aggregate fair value of the Company's debt, based on quoted market prices	$ 128,500		$ 125,400
Aggregate carrying value of the Company's debt	127,000		$ 127,000
Income (expense) recognized	$ (112)	$ 7,190
Contingent Value Rights (CVRs) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Expected life	6 years 3 months	7 years 3 months
Risk-free rate	1.08%	1.66%
Expected volatility	44.32%	47.93%
Dividend yield	0.00%	0.00%
Exercise price	$ 26.20	$ 35.95
Stock price	$ 11.05	$ 16.08
Income (expense) recognized	$ (112)	$ 7,190

Fair Value of Financial Instruments and Derivatives - Summary of Company's Financial Instruments Accounted for at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	$ 14,792	$ 14,904
Fair value on a recurring basis [Member] \| Contingent Value Rights (CVRs) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	14,792	14,904
Quoted prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total
Quoted prices in Active Markets for Identical Assets (Level 1) [Member] \| Fair value on a recurring basis [Member] \| Contingent Value Rights (CVRs) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	14,792	14,904
Significant Other Observable Inputs (Level 2) [Member] \| Fair value on a recurring basis [Member] \| Contingent Value Rights (CVRs) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	14,792	14,904
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total
Significant Unobservable Inputs (Level 3) [Member] \| Fair value on a recurring basis [Member] \| Contingent Value Rights (CVRs) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total

Fair Value of Financial instruments and Derivatives - Summary of Company's Financial Instruments Accounted for at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
GOODWILL	$ 60,085	$ 60,744
Trade names	27,000	27,000
Total	107,529	103,506
Fair value on a nonrecurring basis [Member] \| Goodwill [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
GOODWILL	60,085	60,744
Fair value on a nonrecurring basis [Member] \| Trade names [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trade names	27,000	27,000
Fair value on a nonrecurring basis [Member] \| Net assets held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net assets held for sale	20,444	15,762
Quoted prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total
Quoted prices in Active Markets for Identical Assets (Level 1) [Member] \| Fair value on a nonrecurring basis [Member] \| Goodwill [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
GOODWILL
Quoted prices in Active Markets for Identical Assets (Level 1) [Member] \| Fair value on a nonrecurring basis [Member] \| Trade names [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trade names
Quoted prices in Active Markets for Identical Assets (Level 1) [Member] \| Fair value on a nonrecurring basis [Member] \| Net assets held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net assets held for sale
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total
Significant Other Observable Inputs (Level 2) [Member] \| Fair value on a nonrecurring basis [Member] \| Goodwill [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
GOODWILL
Significant Other Observable Inputs (Level 2) [Member] \| Fair value on a nonrecurring basis [Member] \| Trade names [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trade names
Significant Other Observable Inputs (Level 2) [Member] \| Fair value on a nonrecurring basis [Member] \| Net assets held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net assets held for sale
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	107,529	103,506
Significant Unobservable Inputs (Level 3) [Member] \| Fair value on a nonrecurring basis [Member] \| Goodwill [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
GOODWILL	60,085	60,744
Significant Unobservable Inputs (Level 3) [Member] \| Fair value on a nonrecurring basis [Member] \| Trade names [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trade names	27,000	27,000
Significant Unobservable Inputs (Level 3) [Member] \| Fair value on a nonrecurring basis [Member] \| Net assets held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net assets held for sale	$ 20,444	$ 15,762

Operating Segment and Related Information - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2013 Segment Customer Product
Segment Reporting [Abstract]
Number of geographical reportable segments	2
Number of operating reportable segments	3
Percentage of revenue accounted by major customers	greater than 10%
Number of major customers \| Customer	0
Number of main products \| Product	3

Operating Segment and Related Information - Summary of Company's Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
NET REVENUE	$ 60,883	$ 68,002
Provision for Doubtful Accounts Receivable	710	427
INCOME (LOSS) FROM OPERATIONS	2,238	(299)
Capital Expenditures	6,517	8,111
United States [Member]
Segment Reporting Information [Line Items]
NET REVENUE	7,814	10,096
Canada [Member]
Segment Reporting Information [Line Items]
NET REVENUE	53,069	57,906
BLACKIRON Data [Member]
Segment Reporting Information [Line Items]
NET REVENUE	9,633	8,197
Provision for Doubtful Accounts Receivable	53	7
INCOME (LOSS) FROM OPERATIONS	1,301	1,330
Capital Expenditures	3,865	2,368
North America Telecom [Member]
Segment Reporting Information [Line Items]
NET REVENUE	51,250	59,805
Provision for Doubtful Accounts Receivable	657	420
INCOME (LOSS) FROM OPERATIONS	5,383	5,205
Capital Expenditures	2,642	2,649
Total From Operating Segments [Member]
Segment Reporting Information [Line Items]
INCOME (LOSS) FROM OPERATIONS	6,684	6,535
Capital Expenditures	6,516	7,988
Corporate [Member]
Segment Reporting Information [Line Items]
INCOME (LOSS) FROM OPERATIONS	(4,446)	(6,834)
Capital Expenditures	1	123
Other [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	$ 9	$ 2,971

Operating Segment and Related Information - Segment Reporting for Property and Equipment - Net (Detail) - USD ($) $ in Thousands	Mar. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
PROPERTY AND EQUIPMENT - Net	$ 66,198	$ 65,315
Assets	287,788	301,190
BLACKIRON Data [Member]
Segment Reporting Information [Line Items]
PROPERTY AND EQUIPMENT - Net	33,750	31,998
Assets	38,354	36,108
North America Telecom [Member]
Segment Reporting Information [Line Items]
PROPERTY AND EQUIPMENT - Net	31,763	32,632
Assets	123,725	132,725
Total From Operating Segments [Member]
Segment Reporting Information [Line Items]
PROPERTY AND EQUIPMENT - Net	65,513	64,630
Assets	203,787	215,326
Corporate [Member]
Segment Reporting Information [Line Items]
PROPERTY AND EQUIPMENT - Net	685	685
Assets	84,001	85,864
Other [Member]
Segment Reporting Information [Line Items]
Assets	$ 41,708	$ 46,493

Operating Segment and Related Information - Net Revenue Information with Respect to Company's Products (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenue from External Customer [Line Items]
NET REVENUE	$ 60,883	$ 68,002
Retail Voice [Member]
Revenue from External Customer [Line Items]
NET REVENUE	34,115	42,676
Data/Internet [Member]
Revenue from External Customer [Line Items]
NET REVENUE	19,251	17,681
Retail VoIP [Member]
Revenue from External Customer [Line Items]
NET REVENUE	$ 7,517	$ 7,645

Discontinued Operations - Additional Information (Detail) $ in Millions, $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2012 USD ($)	Jun. 30, 2012 USD ($)	Dec. 31, 2012 USD ($)	May 31, 2012 USD ($)	May 31, 2012 AUD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amount released from escrow	$ 5.4
Net gain			$ 94.3
Attributed adjustment to the long-lived assets of ICS		$ 10.3
M2 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amount released from escrow	$ 4.4
Primus Australian [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Outstanding equity value				$ 195.7	$ 192.4
Gain from sale of discontinued operations, net of tax		98.6
Proceeds from sale placed in escrow		$ 9.8

Discontinued Operations - Summarized Operating Results of Discontinued Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Discontinued Operations And Disposal Groups [Abstract]
Net revenue	$ 58,789	$ 166,690
Operating expenses	59,902	163,586
Income (loss) from operations	(1,113)	3,104
Interest expense		(248)
Interest income and other income (expense)	(55)	154
Foreign currency transaction gain (loss)	(115)	2,799
Income (loss) before income tax	(1,283)	5,809
Income tax (expense) benefit		(1,197)
Income (loss) from discontinued operations	(1,283)	$ 4,612
Summarized assets and liabilities of ICS classified as held for sale
Accounts receivable	16,076		$ 16,070
Prepaid expenses and other current assets	3,347		4,196
Restricted cash	472		487
Long-lived assets	19,389		19,313
Assets held for sale	39,284		40,066
Accounts payable	7,163		10,580
Accrued interconnection costs	5,870		6,961
Accrued expenses and other liabilities	5,807		6,763
Liabilities held for sale	$ 18,840		$ 24,304

Basic and Diluted Income (Loss) Per Common Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive common share	0.0	0.0
Shares issuable upon exercise of stock options and RSUs under the Management Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	0.4	0.6
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	6.2	4.5
Shares issuable upon exercise of CVRs [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	3.7	2.7

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Basic and Diluted Income (Loss) Per Common Share - Basic Income (Loss) Per Common Share to Diluted Income (Loss) Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Earnings Per Share [Abstract]
Income (loss) from continuing operations, net of tax	$ (1,929)	$ (11,470)
INCOME (LOSS) FROM DISCONTINUED OPERATIONS, net of tax	(1,283)	4,612
Net income (loss) attributable to Primus Telecommunications Group, Incorporated-basic	(3,212)	(6,858)
Net income (loss) attributable to Primus Telecommunications Group, Incorporated-diluted	$ (3,212)	$ (6,858)
Weighted average common shares outstanding-basic	13,909	13,744
Weighted average common shares outstanding-diluted	13,909	13,744
Basic income (loss) per common share:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$ (0.14)	$ (0.84)
Income (loss) from discontinued operations	(0.09)	0.34
Net income (loss) attributable to Primus Telecommunications Group, Incorporated	(0.23)	(0.50)
Diluted income (loss) per common share:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	(0.14)	(0.84)
Income (loss) from discontinued operations	(0.09)	0.34
Net income (loss) attributable to Primus Telecommunications Group, Incorporated	$ (0.23)	$ (0.50)

Subsequent Events - Additional Information (Detail) $ in Millions	1 Months Ended
	May 10, 2013 USD ($)	Apr. 26, 2013 USD ($) shares	Apr. 17, 2013 CAD ($)	Mar. 31, 2013 shares	Dec. 31, 2012 shares
RSU [Member]
Subsequent Event [Line Items]
Number of shares held \| shares				162,682	286,208
Subsequent Event [Member] \| Executive Chairman [Member]
Subsequent Event [Line Items]
Shares vested percentage		100.00%
Unpaid short term incentive awards		$ 2,872,500
Subsequent Event [Member] \| Executive Chairman [Member] \| RSU [Member]
Subsequent Event [Line Items]
Number of shares held \| shares		41,586
Dividend equivalents accrued with respect to unvested RSUs		$ 166,344
Subsequent Event [Member] \| Executive Chairman [Member] \| Severance pay [Member]
Subsequent Event [Line Items]
Severance pay and bonus payable		2,800,000
Subsequent Event [Member] \| Executive Chairman [Member] \| Bonus [Member]
Subsequent Event [Line Items]
Severance pay and bonus payable		$ 750,000
Subsequent Event [Member] \| North America Telecom [Member]
Subsequent Event [Line Items]
Equity purchase agreement date	May 10, 2013
Sale price of outstanding equity in subsidiary	$ 129,000,000
Purchase consideration placed in escrow	$ 6,450,000
Period of escrow to be released after closing date	14 months
Indemnification obligations	$ 12,900,000
Percentage of agreement termination fee on purchase price	1.00%
Agreement termination fee	$ 3,870,000
Liquidated damages	25,000,000
Purchase agreement, amount to be paid on initial closing	126,000,000
Subsequent Event [Member] \| North America Telecom [Member] \| Working Capital Adjustment [Member]
Subsequent Event [Line Items]
Purchase consideration placed in escrow	4,000,000
Subsequent Event [Member] \| North America Telecom [Member] \| Income Tax Related Liabilities [Member]
Subsequent Event [Line Items]
Purchase consideration placed in escrow	$ 4,800,000
Period of escrow to be released after closing date	30 days
Subsequent Event [Member] \| BLACKIRON Data [Member]
Subsequent Event [Line Items]
Equity purchase agreement date			Apr. 17, 2013
Sale price of outstanding equity in subsidiary			$ 200
Purchase consideration placed in escrow			$ 20
Period of escrow to be released after closing date			15 months
Agreed period from closing date to compete with BLACKIRON			2 years

Subsequent Events - Schedule of Condensed Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 13,844	$ 23,197	$ 46,181	$ 41,052
Accounts receivable, prepaid expenses and other current assets	23,937
Assets held for sale	39,284	40,066
Total current assets	77,065	86,926
RESTRICTED CASH	832	848
PROPERTY AND EQUIPMENT - Net	66,198	65,315
GOODWILL	60,085	60,744
OTHER INTANGIBLE ASSETS - Net	60,265	63,024
OTHER ASSETS	23,343	24,333
TOTAL ASSETS	287,788	301,190
CURRENT LIABILITIES:
Accounts payable, accrued interconnection costs, accrued expenses and other current liabilities	30,872
Deferred revenue	8,293	8,821
Accrued income taxes	7,701	7,741
Accrued interest	4,926	1,716
Current portion of long-term obligations	54	66
Liabilities held for sale	18,840	24,304
Total current liabilities	70,686	78,423
LONG-TERM OBLIGATIONS	127,069	127,046
CONTINGENT VALUE RIGHTS	14,792	14,904
OTHER LIABILITIES	12,142
Total liabilities	224,689	232,687
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock
Common stock	14	14
Additional paid-in capital	98,662	98,534
Accumulated deficit	(26,410)	(23,198)
Treasury stock, at cost	378	378
Accumulated other comprehensive loss	(8,789)	(6,469)
Total stockholders' equity	63,099	68,503
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	287,788	$ 301,190
Other Adjustments [Member]
CURRENT ASSETS:
Total current assets	282,789
TOTAL ASSETS	263,922
CURRENT LIABILITIES:
Total liabilities	24,303
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock
Total stockholders' equity	239,619
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	263,922
Other Adjustments [Member] \| Sale of BLACKIRON, net of transaction costs [Member]
CURRENT ASSETS:
Cash and cash equivalents	170,651
STOCKHOLDERS' EQUITY:
Accumulated deficit	170,651
Other Adjustments [Member] \| Sale of North America Telecom, net of transaction costs [Member]
CURRENT ASSETS:
Cash and cash equivalents	112,138
STOCKHOLDERS' EQUITY:
Accumulated deficit	112,138
Other Adjustments [Member] \| Impairment of goodwill [Member]
CURRENT ASSETS:
GOODWILL	(26,673)
STOCKHOLDERS' EQUITY:
Accumulated deficit	(26,673)
Other Adjustments [Member] \| Trade names [Member]
CURRENT ASSETS:
OTHER INTANGIBLE ASSETS - Net	(27,000)
CURRENT LIABILITIES:
OTHER LIABILITIES	(10,503)
STOCKHOLDERS' EQUITY:
Accumulated deficit	(16,497)
Other Adjustments [Member] \| Deferral of gain on the BLACKIRON sale [Member]
CURRENT ASSETS:
OTHER ASSETS	19,556
CURRENT LIABILITIES:
OTHER LIABILITIES	19,556
Other Adjustments [Member] \| Deferral of gain on the North America Telecom sale [Member]
CURRENT ASSETS:
OTHER ASSETS	15,250
CURRENT LIABILITIES:
OTHER LIABILITIES	15,250
BLACKIRON Data [Member]
CURRENT ASSETS:
Cash and cash equivalents	(327)
Accounts receivable, prepaid expenses and other current assets	(2,790)
Total current assets	(3,117)
RESTRICTED CASH	(74)
PROPERTY AND EQUIPMENT - Net	(33,750)
GOODWILL	(912)
OTHER INTANGIBLE ASSETS - Net	(503)
TOTAL ASSETS	(38,356)
CURRENT LIABILITIES:
Accounts payable, accrued interconnection costs, accrued expenses and other current liabilities	(8,054)
Deferred revenue	(544)
Current portion of long-term obligations	(29)
Total current liabilities	(8,627)
LONG-TERM OBLIGATIONS	(26)
Total liabilities	(8,653)
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock
Accumulated deficit	(29,703)
Total stockholders' equity	(29,703)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	(38,356)
North America Telecom [Member]
CURRENT ASSETS:
Cash and cash equivalents	(4,672)
Accounts receivable, prepaid expenses and other current assets	(20,360)
Total current assets	(25,032)
RESTRICTED CASH	(758)
PROPERTY AND EQUIPMENT - Net	(31,763)
GOODWILL	(32,500)
OTHER INTANGIBLE ASSETS - Net	(32,762)
OTHER ASSETS	(909)
TOTAL ASSETS	(123,724)
CURRENT LIABILITIES:
Accounts payable, accrued interconnection costs, accrued expenses and other current liabilities	(20,446)
Deferred revenue	(7,749)
Accrued income taxes	(3,464)
Accrued interest	(31)
Current portion of long-term obligations	(25)
Total current liabilities	(31,715)
LONG-TERM OBLIGATIONS	(824)
OTHER LIABILITIES	(1,215)
Total liabilities	(33,754)
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock
Accumulated deficit	(89,970)
Total stockholders' equity	(89,970)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	(123,724)
Pro Forma [Member]
CURRENT ASSETS:
Cash and cash equivalents	291,634
Accounts receivable, prepaid expenses and other current assets	787
Assets held for sale	39,284
Total current assets	331,705
PROPERTY AND EQUIPMENT - Net	685
OTHER ASSETS	57,240
TOTAL ASSETS	389,630
CURRENT LIABILITIES:
Accounts payable, accrued interconnection costs, accrued expenses and other current liabilities	2,372
Accrued income taxes	4,237
Accrued interest	4,895
Liabilities held for sale	18,840
Total current liabilities	30,344
LONG-TERM OBLIGATIONS	126,219
CONTINGENT VALUE RIGHTS	14,792
OTHER LIABILITIES	35,230
Total liabilities	206,585
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock
Common stock	14
Additional paid-in capital	98,662
Accumulated deficit	93,536
Treasury stock, at cost	378
Accumulated other comprehensive loss	(8,789)
Total stockholders' equity	183,045
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 389,630

Subsequent Events - Schedule of Condensed Consolidated Statement of Operations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Schedule Of Condensed Consolidating Statement Of Operation [Line Items]
NET REVENUE	$ 60,883	$ 68,002
OPERATING EXPENSES
Cost of revenue (exclusive of depreciation included below)	29,470	33,505
Selling, general and administrative	22,575	27,156
Depreciation and amortization	6,600	7,597
(Gain) loss on sale or disposal of assets		43
Total operating expenses	58,645	68,301
INCOME (LOSS) FROM OPERATIONS	2,238	(299)
INTEREST EXPENSE	(4,216)	(6,879)
ACCRETION (AMORTIZATION) ON DEBT PREMIUM/DISCOUNT, net	(32)	(57)
GAIN (LOSS) FROM CONTINGENT VALUE RIGHTS VALUATION	112	(7,190)
INTEREST INCOME AND OTHER INCOME (EXPENSE), net	18	4
FOREIGN CURRENCY TRANSACTION GAIN (LOSS)	1	1,951
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(1,879)	(12,470)
INCOME TAX BENEFIT (EXPENSE)	(50)	1,106
INCOME (LOSS) FROM CONTINUING OPERATIONS	(1,929)	(11,364)
Less: Net (income) loss attributable to the noncontrolling interest		(106)
INCOME (LOSS) FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON SHAREHOLDERS OF PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED	$ (1,929)	$ (11,470)
BASIC INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$ (0.14)	$ (0.84)
DILUTED INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$ (0.14)	$ (0.84)
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic	13,909	13,744
Diluted	13,909	13,744
BLACKIRON Data [Member]
Schedule Of Condensed Consolidating Statement Of Operation [Line Items]
NET REVENUE	$ (9,633)	$ (8,197)
OPERATING EXPENSES
Cost of revenue (exclusive of depreciation included below)	(4,438)	(3,377)
Selling, general and administrative	(2,227)	(1,310)
Depreciation and amortization	(1,667)	(2,180)
Total operating expenses	(8,332)	(6,867)
INCOME (LOSS) FROM OPERATIONS	(1,301)	(1,330)
INTEREST EXPENSE	1
INTEREST INCOME AND OTHER INCOME (EXPENSE), net	(1)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(1,301)	(1,330)
INCOME TAX BENEFIT (EXPENSE)	(168)
INCOME (LOSS) FROM CONTINUING OPERATIONS	(1,469)	(1,330)
INCOME (LOSS) FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON SHAREHOLDERS OF PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED	(1,469)	(1,330)
North America Telecom [Member]
Schedule Of Condensed Consolidating Statement Of Operation [Line Items]
NET REVENUE	(51,250)	(59,805)
OPERATING EXPENSES
Cost of revenue (exclusive of depreciation included below)	(25,032)	(30,128)
Selling, general and administrative	(15,903)	(19,056)
Depreciation and amortization	(4,932)	(5,416)
Total operating expenses	(45,867)	(54,600)
INCOME (LOSS) FROM OPERATIONS	(5,383)	(5,205)
INTEREST EXPENSE	81	62
INTEREST INCOME AND OTHER INCOME (EXPENSE), net	(18)	104
FOREIGN CURRENCY TRANSACTION GAIN (LOSS)	77	(71)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(5,243)	(5,110)
INCOME TAX BENEFIT (EXPENSE)	107	(1,352)
INCOME (LOSS) FROM CONTINUING OPERATIONS	(5,136)	(6,462)
INCOME (LOSS) FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON SHAREHOLDERS OF PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED	(5,136)	(6,462)
Pro Forma [Member]
OPERATING EXPENSES
Selling, general and administrative	4,445	6,790
Depreciation and amortization	1	1
(Gain) loss on sale or disposal of assets		43
Total operating expenses	4,446	6,834
INCOME (LOSS) FROM OPERATIONS	(4,446)	(6,834)
INTEREST EXPENSE	(4,134)	(6,817)
ACCRETION (AMORTIZATION) ON DEBT PREMIUM/DISCOUNT, net	(32)	(57)
GAIN (LOSS) FROM CONTINGENT VALUE RIGHTS VALUATION	112	(7,190)
INTEREST INCOME AND OTHER INCOME (EXPENSE), net	(1)	108
FOREIGN CURRENCY TRANSACTION GAIN (LOSS)	78	1,880
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(8,423)	(18,910)
INCOME TAX BENEFIT (EXPENSE)	(111)	(246)
INCOME (LOSS) FROM CONTINUING OPERATIONS	(8,534)	(19,156)
Less: Net (income) loss attributable to the noncontrolling interest		(106)
INCOME (LOSS) FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON SHAREHOLDERS OF PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED	$ (8,534)	$ (19,262)
BASIC INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$ (0.61)	$ (1.40)
DILUTED INCOME (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations attributable to Primus Telecommunications Group, Incorporated	$ (0.61)	$ (1.40)
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic	13,909	13,744
Diluted	13,909	13,744