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Comprehensive Income (Loss) Attributable to Noncontrolling Shareholders' Interests (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Equity [Abstract]    
Net income attributable to noncontrolling shareholders' interests $ 31 $ 274
Other comprehensive income (loss):    
Currency translation adjustments (326) (544)
Comprehensive income (loss) attributable to noncontrolling shareholders’ interests $ (295) $ (270)