Allocation of goodwill to reporting unit.

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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- Definition

Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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- Definition

Amount classified as goodwill attributable to disposal group held for sale or disposed of.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 820

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended
	Oct. 01, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013	Jul. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Weighted average cost of capital	13.00%us-gaap_FairValueInputsDiscountRate	11.10%us-gaap_FairValueInputsDiscountRate
Goodwill		$ 27,990,000us-gaap_Goodwill	$ 3,378,000us-gaap_Goodwill	$ 60,744,000us-gaap_Goodwill
Goodwill attributable to reporting unit			3,700,000
Amortization expense for amortizable intangible assets		901,000us-gaap_AmortizationOfIntangibleAssets	0us-gaap_AmortizationOfIntangibleAssets	200,000us-gaap_AmortizationOfIntangibleAssets
Amortization expense for amortizable intangible assets for the year ending December 31, 2015		3,400,000
Amortization expense for amortizable intangible assets for the year ending December 31, 2016		3,400,000
Amortization expense for amortizable intangible assets for the year ending December 31, 2017		3,400,000
Amortization expense for amortizable intangible assets for the year ending December 31, 2018		3,000,000
Amortization expense for amortizable intangible assets for the year ending December 31, 2019		2,700,000
Amortization expense for amortizable intangible assets thereafter 2019		15,200,000
Canada [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill				34,162,000
United States [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill				26,582,000
BLACKIRON Data [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill					20,200,000
North America Telecom [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill						22,600,000
Sale of Trademark		27,000,000
Deferred tax liabilities		10,500,000
North America Telecom [Member] \| Canada [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill attributable to reporting unit						13,200,000
Primus Telecommunications Inc [Member] \| United States [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill attributable to reporting unit						$ 4,000,000