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Investments (Details 4) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Amortized cost	$ 7,368,815	$ 3,825,952
Estimated fair value	8,194,824	4,124,767
Less Than One Year [Member]
Amortized cost	0	500,000
Estimated fair value	0	499,165
One To Five Years [Member]
Amortized cost	2,598,193	2,099,268
Estimated fair value	2,777,936	2,215,640
Five To Ten Years [Member]
Amortized cost	1,502,603	620,134
Estimated fair value	1,727,316	655,923
More Than 10 Years [Member]
Amortized cost	3,268,019	606,550
Estimated fair value	$ 3,689,572	$ 754,039

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