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Employee Benefits - Disclosure of Reconciliation From Opening Balances to Closing Balances For Net Defined Liability and Its Components (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disclosure Of Defined Benefit Plans [Line Items]    
Balance as at April 1 $ 5,849 $ 4,834
Included in profit or loss    
Current service cost 1,083 949
Interest cost (income) 306 245
Included in profit or loss, total 1,389 1,194
Included in other comprehensive income    
-financial assumptions (155) (158)
-experience adjustment 616 493
-Return on plan assets excluding interest income (35) (136)
Included in other comprehensive income, total 426 199
Effects of movement in foreign exchange rates (217) 110
Other    
Contribution by employer (2) (2)
Liquidation of plan assets [1] 229  
Benefits paid (416) (486)
Balance as at March 31 7,258 5,849
Defined Benefit Obligation [Member]    
Disclosure Of Defined Benefit Plans [Line Items]    
Balance as at April 1 6,490 5,669
Included in profit or loss    
Current service cost 1,083 949
Interest cost (income) 329 283
Included in profit or loss, total 1,412 1,232
Included in other comprehensive income    
-financial assumptions (155) (158)
-experience adjustment 616 493
Included in other comprehensive income, total 461 335
Effects of movement in foreign exchange rates (231) 125
Other    
Benefits paid (675) (871)
Balance as at March 31 7,457 6,490
Fair Value of Plan Assets [Member]    
Disclosure Of Defined Benefit Plans [Line Items]    
Balance as at April 1 (641) (835)
Included in profit or loss    
Interest cost (income) (23) (38)
Included in profit or loss, total (23) (38)
Included in other comprehensive income    
-Return on plan assets excluding interest income (35) (136)
Included in other comprehensive income, total (35) (136)
Effects of movement in foreign exchange rates 14 (15)
Other    
Contribution by employer (2) (2)
Liquidation of plan assets [1] 229  
Benefits paid 259 385
Balance as at March 31 $ (199) $ (641)
[1] Note: On March 17, 2022, the Company has surrendered its plan assets held in Ibibo. The surrender value as at the date of the event has been returned to the Company.