Investments, Net Investment Gains (Losses) and Change in Net Unrealized Gains on Available-for-sale Investments (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Realized gains on available-for-sale investments [Abstract]
Total realized gains	$ 4,288,264	$ 658,083	$ 4,436,695	$ 1,391,773
Realized losses on available-for-sale investments [Abstract]
Other-than-temporary impairments	(411,584)	0	(411,584)	0
Total realized losses	(412,387)	(2,636,929)	(415,772)	(3,487,619)
Net realized investment gains (losses)	3,875,877	(1,978,846)	4,020,923	(2,095,846)
Change in fair value of equity securities [Abstract]
Unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting date	195,136	16,704,460	20,375,015	(688,477)
Change in fair value of equity securities	195,136	16,704,460	20,375,015	(688,477)
Total net investment gains (losses)	4,071,013	14,725,614	24,395,938	(2,784,323)
Change in net unrealized gains (losses) on available-for-sale investments included in other comprehensive income [Abstract]
Change in net unrealized gains (losses) on available-for-sale investments included in other comprehensive income	2,505,067	6,595,986	(4,975,001)	8,068,851
Fixed Maturities [Member]
Realized gains on available-for-sale investments [Abstract]
Total realized gains	34,236	11,732	34,236	403,215
Realized losses on available-for-sale investments [Abstract]
Total realized losses	0	(64,992)	0	(64,992)
Change in net unrealized gains (losses) on available-for-sale investments included in other comprehensive income [Abstract]
Change in net unrealized gains (losses) on available-for-sale investments included in other comprehensive income	2,505,067	6,595,986	(4,975,001)	8,068,851
Equity Securities [Member]
Realized gains on available-for-sale investments [Abstract]
Total realized gains	3,006,835	646,351	3,019,207	988,558
Realized losses on available-for-sale investments [Abstract]
Total realized losses	(803)	(2,571,937)	(4,188)	(3,422,627)
Real Estate [Member]
Realized gains on available-for-sale investments [Abstract]
Total realized gains	1,247,193	0	1,383,252	0
Realized losses on available-for-sale investments [Abstract]
Total realized losses	0	0	0	0
Other [Member]
Realized gains on available-for-sale investments [Abstract]
Total realized gains	0	0	0	0
Realized losses on available-for-sale investments [Abstract]
Total realized losses	$ 0	$ 0	$ 0	$ 0