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Employee Retirement Plans (Periodic Service Costs) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Change in benefit obligation:      
Projected benefit obligation at beginning of period $ 3,381 $ 3,646  
Interest cost 155 152 $ 423
Actuarial gain 66 (47)  
Benefits paid (370) (370)  
Projected benefit obligations at end of year 3,232 3,381 3,646
Change in plan assets:      
Fair value of plan assets at beginning of period 0 18  
Employer contribution 370 370  
Benefits paid (370) (370)  
Settlements paid with termination of qualified plan 0 (18)  
Fair value of plan assets at end of year 0 0 $ 18
Funded status at end of year $ (3,232) $ (3,381)  
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 Actuarial gain Actuarial gain