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Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)								9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Canada [Member]	Dec. 31, 2012 Canada [Member]	Sep. 30, 2013 United States [Member]	Dec. 31, 2012 United States [Member]	Sep. 30, 2013 BLACKIRON Data [Member]	Sep. 30, 2013 North America Telecom [Member]	Jul. 31, 2013 North America Telecom [Member]	Jul. 31, 2013 North America Telecom [Member] Canada [Member]	Sep. 30, 2013 Primus Telecommunications Inc [Member]	Jul. 31, 2013 Primus Telecommunications Inc [Member] United States [Member]
Indefinite-lived Intangible Assets [Line Items]
Goodwill		$ 60,744,000		$ 34,162,000		$ 26,582,000	$ 20,200,000		$ 22,600,000		$ 3,700,000
Goodwill attributable to reporting unit	4,014,000				4,014,000					13,200,000		4,000,000
Sale of Trademark								27,000,000
Deferred tax liabilities								$ 10,500,000

X

- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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- Definition

For the disposal group, including a component of the entity (discontinued operation), carrying amount of goodwill (adjusted for any amortization recognized prior to adoption of FAS 142 and impairment charges).

+ 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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- Definition

The cash inflow from disposal of asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

+ References

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-Publisher FASB

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-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



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