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v3.19.3

3. Investments (Details 1) - USD ($) | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Amortized cost | $ 160,601,004 | $ 155,431,261
Estimated fair value | 166,220,712 | 151,777,516
Less Than One Year [Member] |  |
Amortized cost | 12,273,128 | 6,742,519
Estimated fair value | 12,322,490 | 6,738,014
One To Five Years [Member] |  |
Amortized cost | 50,106,836 | 47,038,838
Estimated fair value | 51,297,620 | 46,640,012
Five To Ten Years [Member] |  |
Amortized cost | 74,473,145 | 76,884,505
Estimated fair value | 78,850,661 | 74,290,076
More Than 10 Years [Member] |  |
Amortized cost | 2,010,182 | 2,974,426
Estimated fair value | 2,047,580 | 2,644,180
Residential mortgage-backed securities [Member] |  |
Amortized cost | 21,737,713 | 21,790,973
Estimated fair value | $ 21,702,361 | $ 21,465,234

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