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Significant Accounting Policies - Mutual Fund Administration Gross and Net Revenue (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue from External Customer [Line Items]
Revenue	$ 35,554,280	$ 38,264,674	$ 102,895,420	$ 119,542,174
Administration revenue, gross
Revenue from External Customer [Line Items]
Revenue	5,491,424	6,129,695	16,247,752	19,550,947
Fund related expense
Revenue from External Customer [Line Items]
Expenses	3,605,495	3,707,104	10,563,585	11,537,907
Mutual fund administration revenue, net
Revenue from External Customer [Line Items]
Revenue	$ 1,885,929	$ 2,422,591	$ 5,684,167	$ 8,013,040

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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