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Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 20

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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Acquisitions - Intangible Assets Related to Acquisition (Detail) (USD $) In Thousands, unless otherwise specified			6 Months Ended				6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 PPC Broadband Inc [Member]	Dec. 10, 2012 PPC Broadband Inc [Member]	Jun. 30, 2013 PPC Broadband Inc [Member] In-process research and development [Member]	Jun. 30, 2013 PPC Broadband Inc [Member] Trademarks [Member]	Jun. 30, 2013 PPC Broadband Inc [Member] Developed technologies [Member]	Jun. 30, 2013 PPC Broadband Inc [Member] Customer relationships [Member]	Jun. 30, 2013 PPC Broadband Inc [Member] Backlog [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Intangible assets subject to amortization			$ 132,500				$ 76,000	$ 55,000	$ 1,500
Goodwill	772,014	778,708	277,005	277,005
Weighted average amortization period			11 years 2 months 12 days				5 years	20 years	6 months
Intangible assets not subject to amortization			309,005		5,000	27,000
Total assets			$ 441,505	$ 549,453