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Investments - Summary of Market Value of Investments (Detail) - USD ($)
Mar. 31, 2025
Dec. 31, 2024
Schedule of Investments [Line Items]    
Total Investments $ 158,809,737 $ 159,752,981
Company sponsored investments    
Schedule of Investments [Line Items]    
Fair value investments 27,092,193 30,146,571
Fair value investments: 27,092,193  
Securities held in Consolidated Funds    
Schedule of Investments [Line Items]    
Fair value investments 37,439,390 35,583,162
Fair value investments: 37,439,390 200,000
Securities held in Consolidated Funds | Parent    
Schedule of Investments [Line Items]    
Fair value investments: $ 36,500,000 $ 35,400,000