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Leases - Summary of Amounts Recognised in Statement of Cash Flows (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Disclosure Of Operating Lease [Abstract]      
Total cash outflows for leases (principal + interest) $ 3,340 $ 3,912 $ 6,212