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Significant Accounting Policies - Mutual Fund Administration Gross and Net Revenue (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue from External Customer [Line Items]
Revenue	$ 36,661,333	$ 33,350,637	$ 72,956,263	$ 67,341,140
Administration revenue, gross
Revenue from External Customer [Line Items]
Revenue	5,930,195	5,339,453	11,648,804	10,756,328
Fund related expense
Revenue from External Customer [Line Items]
Expenses	4,109,987	3,489,259	7,885,459	6,958,090
Mutual fund administration revenue, net
Revenue from External Customer [Line Items]
Revenue	$ 1,820,208	$ 1,850,194	$ 3,763,345	$ 3,798,238

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