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Investments - Investment Income (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Realized gains (losses)	$ (925,889)	$ 2,178,433	$ (1,743,428)	$ 5,085,799
Unrealized gains (losses)	11,948,270	622,890	(10,519,328)	10,400,582
Dividends	570,538	3,242,662	1,464,951	4,248,382
Interest	0	495,409	0	987,630
Other investment income (loss)	(30,295)	(19,798)	(37,663)	82,080
Investment income (loss), net	$ 11,562,624	$ 6,519,596	$ (10,835,468)	$ 20,804,473

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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 before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of investments, not including unrealized gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, held at each balance sheet date and included in earnings for the period.

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