Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current income tax expense:
Federal	$ 9,215	$ 8,428	$ 4,005
State and local	749	606	(15)
Foreign	32,844	24,622	24,737
Total current income tax expense	42,808	33,656	28,727
Deferred income tax expense (benefit):
Federal	(10,597)	(3,051)	(576)
State and local	(742)	(183)	9
Foreign	2,496	3,123	(4,058)
Total deferred income tax expense	(8,843)	(111)	(4,625)
Total tax expense	$ 33,965	$ 33,545	$ 24,102