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ACCOUNTING POLICIES AND SUPPLEMENTAL DISCLOSURES - Valuation Technique And Significant Unobservable Inputs Of Equity Securities (Details) $ in Thousands | Dec. 31, 2024 USD ($) yr | Dec. 31, 2023 USD ($)
--- | --- | ---
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity securities, at fair value | $ 21,640 | $ 41,046
Fair Value, Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity securities, at fair value | 21,600 |
Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity securities, at fair value | 21,640 | $ 41,046
Level 3 | Fair Value, Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity securities, at fair value | 21,640 |
tZERO | Level 3 | Fair Value, Recurring | Term to liquidity | Blended market approach - transaction backsolve adjusted for enterprise value changes in guideline public companies, with an option pricing model method and guideline public company method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity securities, at fair value | $ 17,720 |
Inputs | yr | 4 |
tZERO | Level 3 | Fair Value, Recurring | Volatility | Blended market approach - transaction backsolve adjusted for enterprise value changes in guideline public companies, with an option pricing model method and guideline public company method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Inputs | yr | 1.10 |
tZERO | Level 3 | Fair Value, Recurring | Percentage change in enterprise value for guideline public companies | Blended market approach - transaction backsolve adjusted for enterprise value changes in guideline public companies, with an option pricing model method and guideline public company method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Inputs | yr | (0.824) |
SpeedRoute | Level 3 | Fair Value, Recurring | Market approach - latest transactions |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity securities, at fair value | $ 3,920 |

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