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Equity - Class A of CT Risk Management, L.L.C. (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2023 | Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2023 | Dec. 31, 2021 | Dec. 31, 2020
Class of Stock [Line Items] |  |  |  |  |  |
Purchase of noncontrolling interest |  | $ 0 | $ 0 | $ 131 | $ 0 | $ 5,592
Class A of CT |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Minority interest sold | $ 2,400 |  |  | $ 2,400 |  |
Percent of distributions entitled to residual beneficiary, amount of excess of capital contributions | 2.00% |  |  | 2.00% |  |
Purchase of noncontrolling interest |  |  |  | $ 100 |  |

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