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Investments (Details 1) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Amortized cost	$ 145,435,406	$ 145,045,584
Estimated fair value	153,289,242	157,549,272
Less Than One Year [Member]
Amortized cost	4,161,386	8,559,005
Estimated fair value	4,184,568	8,668,064
One To Five Years [Member]
Amortized cost	40,877,043	44,137,567
Estimated fair value	43,947,314	47,745,430
Five To Ten Years [Member]
Amortized cost	42,375,537	55,508,712
Estimated fair value	46,545,324	63,159,775
More Than 10 Years [Member]
Amortized cost	17,032,902	8,676,409
Estimated fair value	17,306,960	9,314,062
Residential mortgage-backed securities [Member]
Amortized cost	40,988,538	28,163,891
Estimated fair value	$ 41,305,076	$ 28,661,941

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