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Investments - Investment Income (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Realized gains (losses)	$ 1,185,429	$ 512,265	$ 5,244,509	$ (1,231,163)
Unrealized gains (losses)	(4,689,325)	4,040,917	1,572,140	(6,478,411)
Dividends	971,107	518,472	2,241,037	1,983,423
Other	(96,800)	(18,860)	(146,735)	(56,523)
Investment income (loss), net	$ (2,629,589)	$ 5,052,794	$ 8,910,951	$ (5,782,674)

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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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