Income Taxes - Schedule of Income (Loss) Before Income Taxes and Adjustment for Noncontrolling Interests (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Domestic	$ 121,301	$ 117,388	$ 83,577
Foreign	73,459	35,600	4,706
Income before income taxes	$ 194,760	$ 152,988	$ 88,283