Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Tax [Line Items]
Undistributed non-U.S. subsidiary earnings	$ 81,700
Undistributed earnings subject to U.S. federal income tax	28,600
Valuation allowance	18,900	$ 13,167
Deferred tax liability not recognized related to tax basis difference in investment in foreign subsidiaries	15,400
Liability for uncertain tax positions	2,700	$ 8,100
Increase decrease in liability for uncertain tax positions	$ (5,400)
Minimum
Income Tax [Line Items]
Operating loss carryforward period	20 years
Maximum
Income Tax [Line Items]
Operating loss carryforward period	indefinite