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v3.25.1

Allowance for Credit Losses (Reserve Allowance Various Credit Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Valuation And Qualifying Accounts [Abstract] |  |
March 31, 2023 | $ 6,236 |
March 31, 2024 | 5,082 | $ 6,236
Trade Receivables |  |
Valuation And Qualifying Accounts [Abstract] |  |
March 31, 2023 | 6,236 | 3,789
Transition adjustment current expected credit losses | 10,534 | 2,447
March 31, 2024 | 5,082 | 6,236
Investments, Fixed Maturities |  |
Valuation And Qualifying Accounts [Abstract] |  |
March 31, 2023 | 1,052 | 2,101
Transition adjustment current expected credit losses | 2,052 | 1,049
March 31, 2024 | 3,104 | 1,052
Investments, Other |  |
Valuation And Qualifying Accounts [Abstract] |  |
March 31, 2023 | 817 | 517
Transition adjustment current expected credit losses | 369 | 300
March 31, 2024 | 448 | 817
Allowance For Credit Loss [Member] |  |
Valuation And Qualifying Accounts [Abstract] |  |
March 31, 2023 | 8,105 | 6,407
Transition adjustment current expected credit losses | 12,217 | 1,698
March 31, 2024 | $ 8,634 | $ 8,105

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