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Significant Accounting Policies - Mutual Fund Administration Revenue (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue from External Customer [Line Items]
Total revenue	$ 154,496,019	$ 182,193,837	$ 126,387,718
Administration revenue, gross
Revenue from External Customer [Line Items]
Total revenue	25,188,386	29,635,451	22,296,535
Fund related expense
Revenue from External Customer [Line Items]
Expenses	(15,017,884)	(17,579,223)	(15,034,047)
Mutual fund administration revenue, net
Revenue from External Customer [Line Items]
Total revenue	$ 10,170,502	$ 12,056,228	$ 7,262,488

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