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Tax Assets and Liabilities - Summary of Unrecognized Deferred Tax Assets (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Mar. 31, 2020
Disclosure Of Components Of Deferred Tax Assets [Line Items]    
Unrecognized deferred tax assets $ 216,160 $ 204,553
Deductible temporary differences [Member]    
Disclosure Of Components Of Deferred Tax Assets [Line Items]    
Unrecognized deferred tax assets 37,368 39,963
Tax loss carry forwards [Member]    
Disclosure Of Components Of Deferred Tax Assets [Line Items]    
Unrecognized deferred tax assets $ 178,792 $ 164,590