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Net Periodic Benefit Cost (Narratives) (Details) - USD ($)
shares in Thousands
 3 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Mar. 31, 2024
Defined Benefit Plan Disclosure [Line Items]      
Effect of dilutive employee stock options and other share-based awards 244 155  
Average basic shares outstanding 28,662 28,544  
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement $ 41,000 $ 0  
Share-based Payment Arrangement, Option [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 788 378  
Pension Plans, Defined Benefiit      
Defined Benefit Plan Disclosure [Line Items]      
Service costs $ 128,000 $ 180,000  
Interest cost 3,472,000 2,870,000  
Defined Benefit Plan, Expected Return (Loss) on Plan Assets (2,946,000) (2,713,000)  
Net amortization 101,000 208,000  
Net periodic pension (benefit) cost $ 796,000 $ 545,000  
Forecast [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year     $ 6,864,000