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Significant Accounting Policies - Mutual Fund Administration Revenue (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue from External Customer [Line Items]
Total revenue	$ 136,624,380	$ 145,627,748	$ 145,201,729
Administration revenue, gross
Revenue from External Customer [Line Items]
Total revenue	22,569,946	24,463,538	26,219,881
Fund related expense
Revenue from External Customer [Line Items]
Expenses	(13,989,139)	(14,183,370)	(13,748,445)
Revenue, net of related expenses
Revenue from External Customer [Line Items]
Total revenue	8,580,807	10,280,168	12,471,436
Broker Commission
Revenue from External Customer [Line Items]
Total revenue	240,459	332,680	416,614
Expenses	(206,295)	(302,905)	(374,783)
Financing activity, net
Revenue from External Customer [Line Items]
Total revenue	34,164	29,775	41,831
Mutual fund administration revenue, net
Revenue from External Customer [Line Items]
Total revenue	$ 8,614,971	$ 10,309,943	$ 12,513,267

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- Definition

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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