Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Assets:
Debt securities, available for sale	$ 156,231,102
Investment in affiliated entities	17,327,569	$ 6,315,356
Liabilities:
Derivative liability (Note 9)	119,796,000	8,819,023
Significant Unobservable Inputs (Level 3)
Liabilities:
Derivative liability (Note 9)	7,100,000
Mutual funds
Assets:
Debt securities, available for sale	148,949,942	67,338,017
Corporate debt securities
Assets:
Debt securities, available for sale	4,262,800
Certificates of deposit
Assets:
Debt securities, available for sale	3,018,360
Fair Value, Measurements, Recurring
Assets:
Investment in affiliated entities	17,327,569	6,315,356
Total assets	173,558,671	76,003,102
Liabilities:
Derivative liability (Note 9)	119,796,000	8,819,023
Total liabilities	119,796,000	8,819,023
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets (Level 1)
Assets:
Investment in affiliated entities	17,327,569	6,315,356
Total assets	170,540,311	76,003,102
Liabilities:
Derivative liability (Note 9)	0	0
Total liabilities	0	0
Fair Value, Measurements, Recurring \| Significant Other Unobservable Inputs (Level 2)
Assets:
Investment in affiliated entities	0	0
Total assets	3,018,360	0
Liabilities:
Derivative liability (Note 9)	0	0
Total liabilities	0	0
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3)
Assets:
Investment in affiliated entities	0	0
Total assets	0	0
Liabilities:
Derivative liability (Note 9)		8,819,023
Total liabilities	119,796,000	8,819,023
Fair Value, Measurements, Recurring \| Money market funds
Assets:
Cash and cash equivalents, fair value		2,349,729
Fair Value, Measurements, Recurring \| Money market funds \| Quoted Prices in Active Markets (Level 1)
Assets:
Cash and cash equivalents, fair value		2,349,729
Fair Value, Measurements, Recurring \| Money market funds \| Significant Other Unobservable Inputs (Level 2)
Assets:
Cash and cash equivalents, fair value		0
Fair Value, Measurements, Recurring \| Money market funds \| Significant Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents, fair value		0
Fair Value, Measurements, Recurring \| Mutual funds
Assets:
Cash and cash equivalents, fair value	148,949,942	67,338,017
Fair Value, Measurements, Recurring \| Mutual funds \| Quoted Prices in Active Markets (Level 1)
Assets:
Cash and cash equivalents, fair value	148,949,942	67,338,017
Fair Value, Measurements, Recurring \| Mutual funds \| Significant Other Unobservable Inputs (Level 2)
Assets:
Cash and cash equivalents, fair value	0	0
Fair Value, Measurements, Recurring \| Mutual funds \| Significant Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents, fair value	0	$ 0
Fair Value, Measurements, Recurring \| Corporate debt securities
Assets:
Debt securities, available for sale	4,262,800
Fair Value, Measurements, Recurring \| Corporate debt securities \| Significant Other Unobservable Inputs (Level 2)
Assets:
Debt securities, available for sale	0
Fair Value, Measurements, Recurring \| Corporate debt securities \| Significant Unobservable Inputs (Level 3)
Assets:
Debt securities, available for sale	0
Fair Value, Measurements, Recurring \| Certificates of deposit
Assets:
Debt securities, available for sale	3,018,360
Fair Value, Measurements, Recurring \| Certificates of deposit \| Quoted Prices in Active Markets (Level 1)
Assets:
Debt securities, available for sale	0
Fair Value, Measurements, Recurring \| Certificates of deposit \| Significant Other Unobservable Inputs (Level 2)
Assets:
Debt securities, available for sale	3,018,360
Fair Value, Measurements, Recurring \| Certificates of deposit \| Significant Unobservable Inputs (Level 3)
Assets:
Debt securities, available for sale	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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