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Strategic Alliance Expense - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2026 | Mar. 31, 2026 | Jun. 30, 2025 | Mar. 31, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Sep. 30, 2025 | Apr. 01, 2025
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |  |  |
Distributions to the third party | $ 1,021 | $ 1,167 | $ 221 | $ 138 |  |  |  |
Loss on issuance of noncontrolling interests |  |  |  |  | $ 0 | $ (6,524) |  |
Strategic alliance expense | $ 0 |  | $ 0 |  | $ 0 | $ 703 |  |
Bonaccord [Member] |  |  |  |  |  |  |  |
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |  |  |
Percentage of net management fee earnings rights | 15.00% |  | 15.00% |  | 15.00% | 15.00% |  |
Percentage of equity rights available to acquire equity interest in acquiree percentage | 20.00% |  |  |  | 20.00% |  |  |
Portion of income or loss to the third party equity holder | $ 800 |  | $ 700 |  | $ 1,500 | $ 700 |  |
Distributions to the third party |  |  |  |  | $ 1,700 | 0 |  |
Loss on issuance of noncontrolling interests |  |  | $ 6,500 |  |  | $ 6,500 |  |
Percentage of equity converted from net management fee earnings right | 15.00% |  | 15.00% |  | 15.00% | 15.00% |  |
Total percentage of equity interest in acquiree percentage | 20.00% |  |  |  | 20.00% |  |  | 20.00%
Third Party [Member] | Bonaccord [Member] |  |  |  |  |  |  |  |
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |  |  |
Percentage of net management fee earnings rights | 15.00% |  |  |  | 15.00% |  |  |
Bonaccord Fund II [Member] |  |  |  |  |  |  |  |
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |  |  |
Percentage of equity rights available to acquire equity interest in acquiree percentage | 5.00% |  |  |  | 5.00% |  |  | 5.00%
Bonaccord Fund III [Member] |  |  |  |  |  |  |  |
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |  |  |
Investment Company, Committed Capital |  |  |  |  |  |  | $ 5,000 |
Percentage of equity rights available to acquire equity interest in acquiree percentage |  |  |  |  |  |  | 4.90% |
Maximum [Member] | Bonaccord Fund II [Member] |  |  |  |  |  |  |  |
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |  |  |
Investment Company, Committed Capital |  |  |  |  | $ 250,000 |  |  |
Maximum [Member] | Bonaccord Fund III [Member] | Bonaccord [Member] |  |  |  |  |  |  |  |
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |  |  |
Investment Company, Committed Capital |  |  |  |  |  |  | $ 250,000 |
Minimum [Member] | Bonaccord Fund II [Member] |  |  |  |  |  |  |  |
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |  |  |
Investment Company, Committed Capital |  |  |  |  | $ 5,000 |  |  |

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