Goodwill and Identifiable Intangible Assets - Summary of Acquired Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Total intangible assets	$ 44,421	$ 23,821
Accumulated Amortization, finite-lived intangibles	(8,730)	(8,109)
Net Carrying Amount, Total intangible assets	35,691	15,712
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, finite-lived intangibles	24,779	5,356
Accumulated Amortization, finite-lived intangibles	(1,881)	(903)
Net Carrying Amount, finite-lived intangibles	22,898	4,453
Developed technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, finite-lived intangibles	8,522	8,141
Accumulated Amortization, finite-lived intangibles	(3,106)	(3,793)
Net Carrying Amount, finite-lived intangibles	5,416	4,348
Trade name and other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, finite-lived intangibles	11,120	10,324
Accumulated Amortization, finite-lived intangibles	(3,743)	(3,413)
Net Carrying Amount, finite-lived intangibles	$ 7,377	$ 6,911