Income Taxes - Schedule of Domestic and Foreign Components of Pretax Income (Loss) from Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
United States	$ (63,315)	$ 2,382	$ 4,637
Foreign	74,121	76,194	82,746
Income before income taxes	$ 10,806	$ 78,576	$ 87,383