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Pension And Other Postretirement Benefit Plans (Additional Information On Funded Status) (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Mar. 31, 2023
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Pension Benefits [Member] |  |
For Plans With A Projected Benefit Obligation In Excess Of Plan Assets: |  |
Aggregate projected benefit obligation (PBO) | $ 36,842 | $ 29,430
Aggregate fair value of plan assets | 0 | 0
For Plans With An Accumulated Benefit Obligation In Excess Of Plan Assets: |  |
Aggregate accumulated benefit obligation (ABO) | 35,640 | 28,487
Aggregate fair value of plan assets | 0 | 0
Other Postretirement Benefits [Member] |  |
For Plans With A Projected Benefit Obligation In Excess Of Plan Assets: |  |
Aggregate projected benefit obligation (PBO) | 20,078 | 20,716
Aggregate fair value of plan assets | $ 1,934 | $ 2,257

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