Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Contingency [Line Items]
Provision for income taxes	$ (13,531)	$ (13,451)	$ (25,598)	$ (23,599)
Unrecognized tax benefit	21,200		21,200
Net tax benefit from unrecognized tax benefits, if recognized	7,100		7,100
Undistributed earnings of foreign subsidiaries	$ 0		$ 11,500
Costa Rica | Tax holiday through December 31, 2018
Income Tax Contingency [Line Items]
Holiday tax rate			100.00%
Costa Rica | Subsequent four years from December 31, 2018
Income Tax Contingency [Line Items]
Holiday tax rate			50.00%
Income tax holiday, term			4 years