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Employee Retirement Plans (Pension Plans in Excess of Plan Assets) (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items]      
Projected benefit obligations $ 3,381 $ 3,646 $ 51,507
Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Accumulated benefit obligation 3,381 3,646  
Fair value of plan assets 0 18  
Projected benefit obligations 3,381 3,646  
Fair value of plan assets $ 0 $ 18