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Summary of Projected Benefit Obligation, Accumulated Benefit Obligation and Fair Value of Plan Assets (Detail) - USD ($)
$ in Thousands
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Compensation And Retirement Disclosure [Abstract]      
Projected Benefit Obligation $ 33,909 $ 35,844 $ 36,701
Accumulated Benefit Obligation 33,909 35,844  
Fair Value of Plan Assets $ 36,313 $ 37,907 $ 39,009