Goodwill and Intangibles - Intangible Assets and Accumulated Amortization Balances (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 161,326	$ 149,424
Accumulated Amortization	(72,631)	(67,115)
Net Carrying Amount	88,695us-gaap_FiniteLivedIntangibleAssetsNet	82,309us-gaap_FiniteLivedIntangibleAssetsNet
Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	141,613	133,471
Accumulated Amortization	(61,327)	(59,773)
Net Carrying Amount	80,286	73,698
Developed technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8,820	9,252
Accumulated Amortization	(6,800)	(6,842)
Net Carrying Amount	2,020	2,410
Other [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	10,893	6,701
Accumulated Amortization	(4,504)	(500)
Net Carrying Amount	$ 6,389	$ 6,201

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

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

+ References

+ Details

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- Definition

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

+ References

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