Components of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Components Of Income Tax Expense Benefit [Line Items]
Current, Federal	$ 7,759	$ 4,170	$ 1,574
Current, State	(10)	528	111
Current, Foreign	31,387	18,817	21,459
Current, Total	39,136	23,515	23,144
Deferred (net of valuation allowance), Federal	(8,183)	(11,374)	(41,484)
Deferred (net of valuation allowance), State	250	(738)	(1,545)
Deferred (net of valuation allowance), Foreign	(8,351)	(1,201)	(1,687)
Deferred Income Tax Expense (Benefit)	(16,284)	(13,313)	(44,716)
Income tax expense (benefit)	$ 22,852	$ 10,202	$ (21,572)