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Investments - Investment Income (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Realized gains (losses)	$ 2,523,505	$ (817,539)
Unrealized gains (losses)	2,505,344	(22,467,598)
Dividends	665,009	894,413
Other	(30,404)	(7,368)
Investment income (loss), net	$ 5,663,454	$ (22,398,092)

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Investment Income, Other Income (Loss)

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Amount of dividend income on nonoperating securities.

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Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities.

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Amount of realized gain (loss) on investment.

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