Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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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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Long-Lived Assets - Summary of Amortizable Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Impairment	$ 0us-gaap_AssetImpairmentCharges	$ 0us-gaap_AssetImpairmentCharges	$ 3,382us-gaap_AssetImpairmentCharges
Amortizable intangible assets, Net Balance	19,698us-gaap_FiniteLivedIntangibleAssetsNet	25,368us-gaap_FiniteLivedIntangibleAssetsNet
Amortizable intangible assets, Accumulated Amortization	(21,880)	(16,158)
Amortizable intangible assets, Gross carrying value	41,578	41,526
Customer-related [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Net Balance	15,418	17,918
Amortizable intangible assets, Accumulated Amortization	(9,584)	(7,084)
Amortizable intangible assets, Gross carrying value	25,002	25,002
Amortizable intangible assets, Useful Life	10 years
Acquired technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Net Balance	711	2,587
Amortizable intangible assets, Accumulated Amortization	(7,741)	(5,865)
Amortizable intangible assets, Gross carrying value	8,452	8,452
Non-compete agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Net Balance	128	238
Amortizable intangible assets, Accumulated Amortization	(2,242)	(2,132)
Amortizable intangible assets, Gross carrying value	2,370	2,370
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Net Balance	3,441	4,625
Amortizable intangible assets, Accumulated Amortization	(2,313)	(1,077)
Amortizable intangible assets, Gross carrying value	$ 5,754	$ 5,702
Amortizable intangible assets, Useful Life	15 years
Minimum [Member] \| Acquired technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	2 years
Minimum [Member] \| Non-compete agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	3 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	15 years
Maximum [Member] \| Acquired technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	4 years
Maximum [Member] \| Non-compete agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	5 years
Software Operations [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	2 years
Software Operations [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	15 years
Wireless Operations [Member] \| Non-compete agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	3 years