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Significant Accounting Policies - Revenues From Contracts with Customers (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 55,054,554	$ 31,175,755	$ 139,138,640	$ 91,350,429
Investment advisory
Disaggregation of Revenue [Line Items]
Revenue	51,848,379	29,362,652	130,133,909	86,219,325
Mutual fund administration revenue, net
Disaggregation of Revenue [Line Items]
Revenue	3,206,175	1,813,103	9,004,731	5,131,104
Proprietary funds
Disaggregation of Revenue [Line Items]
Revenue	31,811,472	23,248,861	94,573,203	69,744,167
Proprietary funds | Investment advisory
Disaggregation of Revenue [Line Items]
Revenue	28,605,297	21,435,758	85,568,472	64,613,063
Proprietary funds | Mutual fund administration revenue, net
Disaggregation of Revenue [Line Items]
Revenue	3,206,175	1,813,103	9,004,731	5,131,104
Sub-advised funds and separately managed accounts (including $11.9 million of performance-based fees)
Disaggregation of Revenue [Line Items]
Revenue	23,243,082	7,926,894	44,565,437	21,606,262
Sub-advised funds and separately managed accounts (including $11.9 million of performance-based fees) | Investment advisory
Disaggregation of Revenue [Line Items]
Revenue	23,243,082	7,926,894	44,565,437	21,606,262
Sub-advised funds and separately managed accounts (including $11.9 million of performance-based fees) | Mutual fund administration revenue, net
Disaggregation of Revenue [Line Items]
Revenue	$ 0	$ 0	$ 0	$ 0

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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