Investment Securities - Summary of Amortized Cost and Estimated Fair Value of Securities (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Schedule of Investments [Abstract]
Available for Sale Amounts maturing in One year or less, Amortized Cost	$ 0	$ 0
Available for Sale Amounts maturing in After one through five years, Amortized Cost	15,437,594	10,130,179
Available for Sale Amounts maturing in After five through ten years, Amortized Cost	35,610,754	39,818,677
Available for Sale Amounts maturing in After ten years, Amortized Cost	3,205,475	3,634,904
Total debt securities AFS, Amortized Cost	54,253,823	53,583,760
Equity securities, Amortized Cost	100,380	112,380
Total securities AFS, Amortized Cost	54,354,203	53,696,140
Available for Sale Amounts maturing in One year or less, Estimated Fair Value	0	0
Available for Sale Amounts maturing in After one through five years, Estimated Fair Value	15,556,274	10,303,973
Available for Sale Amounts maturing in After five through ten years, Estimated Fair Value	35,441,617	39,507,820
Available for Sale Amounts maturing in After ten years, Estimated Fair Value	3,265,370	3,641,330
Total debt securities AFS, Estimated Fair Value	54,263,261	53,453,123
Equity securities, Estimated Fair Value	100,380	112,380
Total Estimated Fair Value	54,363,641	53,565,503
Held to Maturity Amounts maturing in One year or less, Amortized Cost	9,812,609	7,939,740
Held to Maturity Amounts maturing in After one through five years, Amortized Cost	19,467,142	26,537,314
Held to Maturity Amounts maturing in After five through ten years, Amortized Cost	12,546,856	15,178,560
Held to Maturity Amounts maturing in After ten years, Amortized Cost	2,764,234	4,946,921
Total securities HTM, Amortized Cost	44,590,841	54,602,535
Held to Maturity Amounts maturing in One year or less, Estimated Fair Value	9,821,948	7,941,397
Held to Maturity Amounts maturing in After one through five years, Estimated Fair Value	19,680,375	26,786,525
Held to Maturity Amounts maturing in After five through ten years, Estimated Fair Value	12,806,108	15,493,803
Held to Maturity Amounts maturing in After ten years, Estimated Fair Value	2,839,369	4,901,348
Total securities HTM, Estimated Fair Value	$ 45,147,800	$ 55,123,073