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Beginning Balance, Quarterly Activity and Ending Balance of Foreign Currency Translation Adjustment Included as Component of Accumulated Other Comprehensive Loss (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance $ 360,736 $ 344,156
FX translation (2,503) (9,063)
Balance 360,046 334,207
Foreign Currency Translation Adjustments    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance (9,322) (5,698)
FX translation (2,503) (9,063)
Balance $ (11,825) $ (14,761)