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Related Party Transactions (Related Party Assets) (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Mar. 31, 2023
--- | --- | ---
Related Party Transaction [Line Items] |  |
Related party assets | $ 57,934 | $ 48,308
Blackwater [Member] |  |
Related Party Transaction [Line Items] |  |
Notes receivable | 31,950 | 42,141
Mercury [Member] |  |
Related Party Transaction [Line Items] |  |
Notes receivable | 24,536 | 8,402
Insurance Group [Member] |  |
Related Party Transaction [Line Items] |  |
Timing Difference Insurance Subsidiaries | $ 1,448 | $ 2,235

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