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Employee Retirement Plans (Expected Return on Plan Assets) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Retirement Benefits [Abstract]      
Interest cost $ 423 $ 1,107 $ 1,972
Expected return on assets (252) (1,163) (2,336)
Net periodic benefit cost (income) $ 171 $ (56) $ (364)
Defined Benefit Plan Net Periodic Benefit Cost Credit Interest Cost Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag Interest cost Interest cost Interest cost
Defined Benefit Plan Net Periodic Benefit Cost Credit Expected Return Loss Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag Actuarial (gain) loss Actuarial (gain) loss Actuarial (gain) loss