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Employee Retirement Plans (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Apr. 30, 2022
Jun. 30, 2022
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
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 $ 1,900 $ 1,700
Lump sum settlement of terminated plan   $ 13,800      
Payment for settlement, purchase of annuity contract   31,100      
Settlement gain (loss)   $ (400)      
Projected benefit obligations     $ 3,381 $ 3,646 $ 51,507
Expected return on plan assets, net of administrative fees (as percent) 2.75%   0.00% 2.75% 2.25%
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%