v3.25.4
Investments in Proprietary Funds - Schedule of Financial Information of Equity Method Investment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Statement of Financial Condition      
Liabilities $ 97,406 $ 147,693  
Equity 338,953 340,171 $ 209,088
Statement of Operations      
Net loss attributable to Horizon Kinetics Holding Corporation $ 5,118 $ 92,472