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Financial Instruments - Summary of Maximum Exposure to Credit Risk (Detail) - USD ($)
$ in Thousands
Mar. 31, 2022
Mar. 31, 2021
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure $ 517,120 $ 477,255
Trades and other receivables [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 39,623 27,331
Trades and other receivables [Member] | India [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 34,185 23,571
Trades and other receivables [Member] | Thailand [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 1,190 1,324
Trades and other receivables [Member] | Malaysia [member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 138 157
Trades and other receivables [Member] | Singapore [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 370 188
Trades and other receivables [Member] | Others [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 3,740 2,091
Trades and other receivables [Member] | Airlines [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 10,081 6,239
Trades and other receivables [Member] | Retail customers [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 307 117
Trades and other receivables [Member] | Corporate customers [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 14,905 10,757
Trades and other receivables [Member] | Deposit With Hotels And Others [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 6,516 5,900
Trades and other receivables [Member] | Others [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 7,814 4,318
Receivable from related party [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 53 55
Term deposits [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure 264,185 154,868
Cash and cash equivalents (except cash in hand) [Member]    
Disclosure Of Financial Assets [Line Items]    
Maximum credit exposure $ 213,259 $ 295,001