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Investments (Details 1) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Amortized cost	$ 155,226,267	$ 162,202,355
Estimated fair value	165,466,488	168,236,181
Less Than One Year [Member]
Amortized cost	8,634,023	11,986,401
Estimated fair value	8,717,499	12,025,804
One To Five Years [Member]
Amortized cost	50,151,886	49,715,422
Estimated fair value	53,273,499	51,000,025
Five To Ten Years [Member]
Amortized cost	66,090,352	69,850,104
Estimated fair value	73,226,458	74,410,275
More Than 10 Years [Member]
Amortized cost	8,710,469	4,511,795
Estimated fair value	8,875,888	4,568,847
Residential mortgage-backed securities [Member]
Amortized cost	21,639,537	26,138,633
Estimated fair value	$ 21,373,144	$ 26,231,230

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