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Employee Benefit Plans (Components of Net Periodic Post Retirement Benefit Cost) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Postemployment Benefits [Abstract] |  |  |
Service cost for benefits earned during the period | $ 1,188 | $ 1,326 | $ 1,401
Interest cost on accumulated postretirement benefit | 1,469 | 1,148 | 908
Other components | 11 | 68 | 212
Total other components of net periodic benefit costs | 1,458 | 1,216 | 1,120
Net periodic postretirement benefit cost | $ 2,646 | $ 2,542 | $ 2,521

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