Components of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Components Of Income Tax Expense Benefit [Line Items]
Current, Federal	$ 4,170	$ 1,574	$ 854
Current, State	528	111	772
Current, Foreign	18,817	21,459	12,937
Current, Total	23,515	23,144	14,563
Deferred (net of valuation allowance), Federal	(11,374)	(41,484)	6,003
Deferred (net of valuation allowance), State	(738)	(1,545)	(650)
Deferred (net of valuation allowance), Foreign	(1,201)	(1,687)	1,753
Deferred Tax Expense Benefit Net Of Valuation Allowance	(13,313)	(44,716)	7,106
Income tax expense (benefit)	$ 10,202	$ (21,572)	$ 21,669