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Pension and Profit Sharing Plans - Components of Net Periodic Cost (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Retirement Benefits [Abstract]      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Interest Expense Interest Expense Interest Expense
Interest Cost of Projected Benefit Obligation $ 1,240 $ 1,167 $ 1,216
Expected Return on Plan Assets (1,366) (1,299) (1,419)
Recognized Net Actuarial Loss 123 143 133
Net Periodic Pension Cost $ (3) $ 11 $ (70)