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Employee Retirement Plans (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2022
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined contribution plan, minimum annual contributions per participating employee (as percent)   1.00%    
Defined contribution plan, maximum annual contributions per employee (as percent)   70.00%    
Defined contribution plan, cost recognized   $ 2,000 $ 2,000 $ 1,900
Lump sum settlement of terminated plan $ 13,800      
Payment for settlement, purchase of annuity contract 31,100      
Settlement loss $ 400      
Unrecognized prior service credit   $ 0 $ 0 $ 0
Contribution Tranche One        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined contribution plan, employer matching contribution, percent of match (as percent)   100.00%    
Defined contribution plan, employer matching contribution, percent of employees pay (as percent)   3.00%    
Contribution Tranche Two        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined contribution plan, employer matching contribution, percent of match (as percent)   50.00%    
Defined contribution plan, employer matching contribution, percent of employees pay (as percent)   3.00%