Employee Benefit Plans - Summary of Net Plan Asset Information for Pension Plan (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Plan assets at fair value at measurement date	$ 515	$ 589	$ 426	$ 515
Projected benefit obligations at measurement date			(1,482)	(1,444)
Funded status			$ (1,056)	$ (929)
Plan assets at fair value at date of acquisition	515	589
Actual return on plan assets	64	9
Benefits paid	(141)	(22)
Effect of foreign currency translation gains	(13)	(61)
Plan assets at fair value at measurement date	$ 426	$ 515