Income Taxes - Schedule of Income (Loss) from Continuing Operations Before Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
U.S.	$ 23,006	$ 15,480	$ 17,532
Non-U.S.	(3,982)	(6,973)	(5,076)
Income before income taxes	$ 19,024	$ 8,507	$ 12,456