Investment Securities (Details 1) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Amortized Cost
Due in one year or less	$ 8,561,255	$ 3,343,347
Due in one year to five years	70,669,406	82,848,411
Due in five years to ten years	43,799,734	29,662,030
Due in ten years and over	3,141,741	5,088,827
Total	126,172,136	120,942,615
Estimated Fair Value
Due in one year or less	8,586,020	3,350,205
Due in one year to five years	71,024,994	82,682,901
Due in five years to ten years	43,853,008	29,169,228
Due in ten years and over	3,032,862	4,776,610
Total	$ 126,496,884	$ 119,978,944