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Summary of significant accounting policies and estimates (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Oct. 26, 2021 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Securities owned, at fair value |  | $ 1,108,206 | $ 795,312 |
Carrying value of intangibles |  | 35,709 | 34,340 |
Defined-lived intangible assets |  | $ 2,900 |  |
Number of business days for related transactions (in days) |  | 1 day |  |
Cash equivalents maximum maturity period of highly liquid investments |  | 90 days |  |
Period after April 29, 2023 | 10 days |  |  |
Combination period | 18 months |  |  |
Net income (loss) attributable to non-controlling interests |  | $ (310) | 93 | $ (241)
IPO |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Total funds | $ 127,800 |  |  |
Proceeds from Company sponsored Initial Public Offering | 126,500 |  |  |
Investment from sponsor | $ 1,300 |  |  |
Minimum | Furniture, fixtures and equipment |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Furniture, fixtures, and equipment, useful life |  | 3 years |  |
Minimum | Notes Receivable |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Service period |  | 3 years |  |
Maximum | Furniture, fixtures and equipment |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Furniture, fixtures, and equipment, useful life |  | 7 years |  |
Maximum | Notes Receivable |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Service period |  | 9 years |  |
Securities |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of business days for related transactions (in days) |  | 1 day |  |
Auction rate securities |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Securities owned, at fair value |  | $ 2,652 | 2,713 |
Level 3 |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Securities owned, at fair value |  | 2,652 | 2,713 |
Level 3 | Auction rate securities |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Securities owned, at fair value |  | $ 2,652 | $ 2,713 |

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