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Financial Instruments - Summary of Movement in Allowance for Impairment in Respect of Trade and Other Receivables (Detail) - Trade and other receivables [Member] - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disclosure Of Financial Assets [Line Items]    
Allowance account for credit losses of financial assets at beginning of period $ 2,481 $ 2,893
Allowance for impairment 904 358
Amounts written off against the allowance (493) (908)
Effects of movement in exchange rate (80) 138
Allowance account for credit losses of financial assets at end of period $ 2,812 $ 2,481