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Supplemental Cash Flow - Schedule of Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2023
Supplemental Cash Flow Information [Abstract] |  |  |
Establishment of lease liability in exchange for right of use asset | $ 5,455 | $ 5,401 |
Deconsolidation of net liabilities held by deconsolidated fund | 6,095 | 0 |
Non-cash investing activities: |  |  |
Deconsolidation of investments held by deconsolidated fund | 103,990 | 0 |
Transfer of equity method investment in Partnerships from deconsolidated fund | 32,018 | 0 |
Establishment of receivable for intangible assets sold | 0 | 6,776 |
Non-cash purchase of other equity method investment | 2,000 | 0 |
Non-cash financing activities: |  |  |
Dividends declared but not paid | 16,793 | 14,810 | $ 15,049
Member distributions declared but not paid | $ 21,216 | $ 19,161 |

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