Goodwill and Identifiable Intangible Assets - Summary of Acquired Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 24,505	$ 26,210
Accumulated Amortization	(5,735)	(4,646)
Other intangibles—indefinite lived	1,962	1,962
Net Carrying Amount	18,770	21,564
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,979	5,437
Accumulated Amortization	(836)	(743)
Net Carrying Amount	4,143	4,694
Developed Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,887	8,353
Accumulated Amortization	(2,560)	(2,194)
Net Carrying Amount	5,327	6,159
Trade Name and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	9,677	10,458
Accumulated Amortization	(2,339)	(1,709)
Net Carrying Amount	$ 7,338	$ 8,749