Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ (252,976)	$ (145,735)
Foreign currency translation income (loss)	12,018	(1,575)
Current period other comprehensive income (loss)	12,018	(1,575)
Ending Balance	(248,589)	(252,976)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(54,643)	(53,068)
Foreign currency translation income (loss)	12,018	(1,575)
Current period other comprehensive income (loss)	12,018	(1,575)
Ending Balance	$ (42,625)	$ (54,643)