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Investments - Investment Income (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Realized gains (losses)	$ 512,265	$ 194,373	$ (1,231,163)	$ 5,280,172
Unrealized gains (losses)	4,040,917	1,089,398	(6,478,411)	11,489,980
Dividends	518,472	1,559,836	1,983,423	5,808,218
Interest	0	0	0	987,418
Other investment income (loss)	(18,860)	(20,660)	(56,523)	61,631
Investment income (loss), net	$ 5,052,794	$ 2,822,947	$ (5,782,674)	$ 23,627,419

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Investment Income, Other Income (Loss)

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Amount of dividend income on nonoperating securities.

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