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Significant Accounting Policies - Mutual Fund Administration Revenue (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Revenue from External Customer [Line Items]      
Total revenue $ 151,095,131 $ 136,716,371 $ 154,496,019
Administration revenue, gross      
Revenue from External Customer [Line Items]      
Total revenue 24,719,844 21,597,721 25,188,386
Fund related expense      
Revenue from External Customer [Line Items]      
Expenses (16,966,656) (14,060,850) (15,017,884)
Fund administration revenue, net      
Revenue from External Customer [Line Items]      
Total revenue $ 7,753,188 $ 7,536,871 $ 10,170,502