Income Taxes - Significant Components of Income Tax Provision (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
U.S. federal	$ 7,374	$ 2,579	$ 881
State and local	1,051	542	82
Foreign	10,446	11,382	13,464
Total current provision for income taxes	18,871	14,503	14,427
Deferred:
U.S. federal	3,873	5,437	866
State and local	(1,227)	(446)
Foreign	(131)	(126)	(1,228)
Total deferred provision (benefit) for income taxes	2,515	4,865	(362)
Total provision for income taxes	$ 21,386	$ 19,368	$ 14,065