Employee Benefit Plans - Summary of Projected Benefit Obligation Information for Pension Plan (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation at measurement date	$ 949	$ 950
Effect of salary increases	533	494
Projected benefit obligation at measurement date	1,482	1,444
Service and interest costs	113	103
Actuarial gains (losses)	118	(15)
Benefits paid	(141)	(22)
Effect of foreign currency translation gains and other	(50)	(159)
Projected benefit obligation at measurement date	1,482	1,444
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation at date of acquisition	$ 1,444	$ 1,537