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Significant Accounting Policies - Mutual Fund Administration Gross and Net Revenue (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue from External Customer [Line Items]
Revenue	$ 33,350,637	$ 39,021,114	$ 67,341,140	$ 81,277,500
Administration revenue, gross
Revenue from External Customer [Line Items]
Revenue	5,339,453	6,481,081	10,756,328	13,421,253
Fund related expense
Revenue from External Customer [Line Items]
Expenses	3,489,259	3,868,132	6,958,090	7,830,804
Mutual fund administration revenue, net
Revenue from External Customer [Line Items]
Revenue	$ 1,850,194	$ 2,612,949	$ 3,798,238	$ 5,590,449

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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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