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Executive Stock Plans And Stock-Based Compensation (Narrative) (Details)
$ in Millions
12 Months Ended
Mar. 31, 2022
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | shares 1,000,000
Unrecognized compensation expense related to stock-based awards | $ $ 4.5
Unrecognized compensation expense related to stock-based awards, weighted-average period expected to recognized 10 months 24 days
Performance Share Awards Psas [Member  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period, in years 3 years
Performance Share Awards Psas [Member | Minimum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Percentage of award grant paid 0.00%
Performance Share Awards Psas [Member | Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Percentage of award grant paid 150.00%
Plans Before Fiscal 2020 [Member] | Outside Directors [Member] | Restricted Stock Units (RSUs) [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period, in years 3 years
Plans After Fiscal 2020 [Member] | Outside Directors [Member] | Restricted Stock Units (RSUs) [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period, in years 1 year
Plans before Fiscal 2022 [Member] | Restricted Stock Units (RSUs) [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period, in years 5 years
Plans After Fiscal 2022 [Member] | Restricted Stock Units (RSUs) [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period, in years 3 years