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Investments (Details 4) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Amortized cost	$ 8,266,334	$ 7,368,815
Estimated fair value	8,753,159	8,194,824
Less Than One Year [Member]
Amortized cost	994,712	0
Estimated fair value	1,008,180	0
One To Five Years [Member]
Amortized cost	1,205,829	2,598,193
Estimated fair value	1,290,465	2,777,936
Five To Ten Years [Member]
Amortized cost	1,513,942	1,502,603
Estimated fair value	1,648,808	1,727,316
More Than 10 Years [Member]
Amortized cost	4,551,851	3,268,019
Estimated fair value	$ 4,805,706	$ 3,689,572

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