Income Taxes - Schedule of Income Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Domestic	$ 33,543	$ 107,158	$ 124,571
Foreign	82,325	142,613	154,809
Income before income taxes	$ 115,868	$ 249,771	$ 279,380