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Employee Benefits - Summary of Net Defined Benefit Liability (Detail) - USD ($)
$ in Thousands
Mar. 31, 2022
Mar. 31, 2021
Disclosure Of Net Defined Benefit Liability Asset [Line Items]    
Net defined benefit liability $ 7,258 $ 5,849
Defined Benefit Obligation [Member]    
Disclosure Of Net Defined Benefit Liability Asset [Line Items]    
Present value of unfunded obligation 7,457 6,490
Fair Value of Plan Assets [Member]    
Disclosure Of Net Defined Benefit Liability Asset [Line Items]    
Less: fair value of plan assets $ (199) $ (641)