Goodwill and Other Intangible Assets - Acquisition-related Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Acquired Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 62,342	$ 61,380
Accumulated Amortization	(32,168)	(23,065)
Net Carrying Amount	30,174	38,315
Trade name and trademarks
Acquired Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	4,060	4,060
Accumulated Amortization	(3,096)	(2,296)
Net Carrying Amount	964	1,764
Technology
Acquired Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	36,290	36,290
Accumulated Amortization	(19,552)	(13,669)
Net Carrying Amount	16,738	22,621
Customer relationships
Acquired Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	21,030	21,030
Accumulated Amortization	(9,450)	(7,100)
Net Carrying Amount	11,580	$ 13,930
Assembled workforce
Acquired Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	962
Accumulated Amortization	(70)
Net Carrying Amount	$ 892