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Related Party Transactions (Related Party Assets) (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Mar. 31, 2024
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Related Party Transaction [Line Items] |  |
Related party assets | $ 45,003 | $ 57,934
Blackwater [Member] |  |
Related Party Transaction [Line Items] |  |
Notes receivable | 28,442 | 31,950
Mercury [Member] |  |
Related Party Transaction [Line Items] |  |
Notes receivable | 12,517 | 24,536
Insurance Group [Member] |  |
Related Party Transaction [Line Items] |  |
Timing Difference Insurance Subsidiaries | $ 4,044 | $ 1,448

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