Goodwill and Identifiable Intangible Assets - Summary of Acquired Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (12,020)	$ (8,109)
Net Carrying Amount	28,243
Total intangible assets, Gross Carrying Amount	40,263	23,821
Total intangible assets, Net Carrying Amount	28,243	15,712
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,200	5,356
Accumulated Amortization	(3,220)	(903)
Net Carrying Amount	17,980	4,453
Developed Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,497	8,141
Accumulated Amortization	(3,891)	(3,793)
Net Carrying Amount	2,606	4,348
Trade Name and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,566	10,324
Accumulated Amortization	(4,909)	(3,413)
Net Carrying Amount	$ 7,657	$ 6,911