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Investments (Details 1) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Amortized cost	$ 145,126,859	$ 162,202,355
Estimated fair value	156,538,589	168,236,181
More Than 10 Years [Member]
Amortized cost	8,693,505	4,511,795
Estimated fair value	9,126,504	4,568,847
Residential mortgage-backed securities [Member]
Amortized cost	24,002,398	26,138,633
Estimated fair value	24,352,426	26,231,230
Less Than One Year [Member]
Amortized cost	8,879,582	11,986,401
Estimated fair value	8,986,248	12,025,804
One To Five Years [Member]
Amortized cost	46,530,097	49,715,422
Estimated fair value	49,878,416	51,000,025
Five To Ten Years [Member]
Amortized cost	57,021,277	69,850,104
Estimated fair value	$ 64,194,995	$ 74,410,275

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