Income Taxes - Schedule of Provision for Income Taxes on Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
U.S.
Current	$ 558	$ 6,792	$ 5,067
Deferred	9,296	(1,146)	2,825
Total U.S	9,854	5,646	7,892
Non-U.S.
Current	4,509	3,661	18,186
Deferred	1,164	1,542	(9,878)
Total Non U.S	5,673	5,203	8,308
Income tax expense	$ 15,527	$ 10,849	$ 16,200