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Related Parties - Summary of Key Management Personnel Compensation (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Disclosure Of Key Management Personnel Compensation [Abstract]      
Short-term employee benefits $ 1,961 $ 2,287 $ 2,239
Contribution to defined contribution plan 21 184 68
Share based payment 16,767 19,804 21,984
Legal and professional 38 77 76
Total 18,787 22,352 $ 24,367
Balance Outstanding      
Employee related payables 1,207 655  
Accrued expenses $ 34 $ 48