Income Taxes - Reconciliation from Tax at U.S. Federal Statutory Rate to Company's Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Tax at US federal income tax rate	$ 11,871	$ 17,881	$ 22,092
State taxes, net of federal income tax effect	(141)	578	495
Change in tax rate	(102)	32	11
Foreign reorganization		(710)	3,786
Foreign taxes	(2,593)	(2,050)	(2,888)
Adjustments to accrued income tax liabilities and uncertain tax positions	47	(18)	(287)
Valuation allowance	118	1,218	612
Tax credits and incentives	(296)	(420)	(666)
Domestic manufacturing deduction	(486)	(1,051)	(1,201)
Other	327	284	982
Provision for income taxes	$ 8,745	$ 15,744	$ 22,936