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Fair Value Measurements (Financial instruments level within the fair value hierarchy) (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Mar. 31, 2024
--- | --- | ---
Assets: |  |
Fixed maturities - available for sale | $ 2,395,890 | $ 2,442,504
Preferred stock | 22,067 | 21,260
Common stock | 51,999 | 45,014
Derivatives | 17,190 | 18,930
Total | 2,319,178 | 2,527,708
Liabilities: |  |
Guaranteed residual values of TRAC leases | 9,880 | 9,300
Liabilities from investment contracts | 2,295,851 | 2,290,096
Market risk benefits | 13,447 | 13,400
Total | 2,487,146 | 2,312,796
Level 1 [Member] |  |
Assets: |  |
Preferred stock | 22,067 | 21,260
Common stock | 51,999 | 45,014
Derivatives | 8,804 | 10,538
Total |  | 76,812
Liabilities: |  |
Total | 82,870 |
Level 2 [Member] |  |
Assets: |  |
Fixed maturities - available for sale | 2,395,832 | 2,442,446
Derivatives | 8,386 | 8,392
Total |  | 2,450,838
Liabilities: |  |
Total | 2,404,218 |
Level 3 [Member] |  |
Assets: |  |
Fixed maturities - available for sale | 58 | 58
Total | 2,319,178 | 58
Liabilities: |  |
Guaranteed residual values of TRAC leases | 9,880 | 9,300
Liabilities from investment contracts | 2,295,851 | 2,290,096
Market risk benefits | 13,447 | 13,400
Total | $ 58 | $ 2,312,796

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