Pension and Profit Sharing Plans - Components of Net Periodic Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Retirement Benefits [Abstract]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense, Operating and Nonoperating	Interest Expense, Operating and Nonoperating	Interest Expense, Operating and Nonoperating
Interest Cost of Projected Benefit Obligation	$ 1,434	$ 1,413	$ 1,240
Expected Return on Plan Assets	(1,548)	(1,512)	(1,366)
Recognized Net Actuarial Loss	238	250	123
Net Periodic Pension Cost	$ 124	$ 151	$ (3)