Fair value measurements - Narrative (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Securities owned, at fair value | $ 1,532,557 | $ 1,250,802 |
| Loans | 148 | 653 |
| Level 3 | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Securities owned, at fair value | 3,412 | 3,362 |
| Convertibles note, fair value | 2,200 | 2,100 |
| Warrants at fair value | 1,200 | 1,200 |
| Loans | 0 | 0 |
| Level 3 | Private equity funds | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Equity securities | 17,000 | 17,000 |
| Level 3 | Trade claims | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Securities owned, at fair value | 0 | 0 |
| Level 2 | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Securities owned, at fair value | 282,204 | 62,676 |
| Loans | 148 | 653 |
| Equity method investments | $ 6,300 | $ 6,300 |
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- Definition Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value portion of investments accounted under the equity method. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value of financial instruments held by a broker-dealer for their own account (proprietary securities) for trading or investment purposes determined by management based upon quoted prices of a financial instrument with similar characteristics or on a valuation technique or model. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value portion of warrants not settleable in cash classified as equity. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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