Schedule of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ (248,866)
Foreign currency translation loss	(6,457)	$ (2,369)
Current period other comprehensive loss	(6,457)	(2,369)
Ending Balance	(247,381)	(278,690)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(42,625)	(54,643)
Foreign currency translation loss	(6,457)	(2,369)
Current period other comprehensive loss	(6,457)	(2,369)
Ending Balance	$ (49,082)	$ (57,012)