4. Investment Securities (Details 2) - Available for sale Securities - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Amortized Cost
Due in one year or less	$ 1,521,908	$ 0
Due from one to five years	12,633,885	12,714,642
Due from five to ten years	12,041,660	11,451,023
Due after ten years	979,831	0
Agency MBS	15,003,111	16,020,892
Total	42,180,395	40,186,557
Fair Value
Due in one year or less	1,522,901	0
Due from one to five years	12,807,696	12,519,008
Due from five to ten years	12,217,358	11,273,298
Due after ten years	992,845	0
Agency MBS	15,038,495	15,574,525
Total	$ 42,579,295	$ 39,366,831