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Other Income - Summary of Other Income (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Disclosure Of Other Income [Abstract]                      
Government grant received                 $ 525 $ 1,167  
Gain on discontinuation of equity accounted investment on disposal (refer note 8 (b))                 2,251    
Gain on disposal of an equity-accounted investee (refer note 8 (a))                     $ 700
Gain on lease modification                 417 1,912  
Excess provision written back                 272 593 363
Net gain on de-recognition of property, plant and equipment                 6 (406) (19)
Others                 19    
Total $ 208 $ 2,562 $ 383 $ 337 $ 1,417 $ 479 $ 416 $ 1,360 $ 3,490 $ 3,672 $ 1,063