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Summary of significant accounting policies and estimates (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Oct. 26, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Securities owned, at fair value |  | $ 795,312,000 | $ 498,594,000 |
Indefinite intangible assets |  | 32,700,000 |  |
Defined-lived intangible assets |  | $ 1,600,000 |  |
Cash equivalents maximum maturity period of highly liquid investments |  | 90 days |  |
Proceeds from Company sponsored Initial Public Offering |  | $ 0 | 0 | $ 126,500,000
Period after April 29, 2023 | 10 days |  |  |
Combination period | 18 months |  |  |
Net income (loss) attributable to non-controlling interests |  | 93,000 | (241,000) | 0
Restricted cash |  | 0 | 25,534,000 | $ 127,765,000
Auction rate securities |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Securities owned, at fair value |  | $ 2,713,000 | 31,776,000 |
IPO |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Proceeds from Company sponsored Initial Public Offering | $ 126,500,000 |  |  |
Total funds | 127,800,000 |  |  |
Investment from sponsor | $ 1,300,000 |  |  |
Minimum |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of business days for related transactions (in days) |  | 1 day |  |
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 |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of business days for related transactions (in days) |  | 2 days |  |
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 |  | 10 years |  |
Securities |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of business days for related transactions (in days) |  | 2 days |  |
Commodities |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of business days for related transactions (in days) |  | 1 day |  |
Level 3 |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Securities owned, at fair value |  | $ 2,713,000 | 31,776,000 |
Level 3 | Auction rate securities |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Securities owned, at fair value |  | $ 2,713,000 | $ 31,776,000 |

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