Investment Securities (Details 1) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Amortized Cost
Due in one year or less	$ 3,314,449	$ 4,246,325
Due in one year to five years	82,244,256	99,753,174
Due in five years to ten years	15,551,630	17,504,456
Due in ten years and over		414,546
Total	101,110,336	121,918,501
Estimated Fair Value
Due in one year or less	3,318,732	4,249,570
Due in one year to five years	82,503,885	97,915,185
Due in five years to ten years	15,608,346	17,128,425
Due in ten years and over		375,694
Total	$ 101,430,963	$ 119,668,874