Loans and Allowance for Loan Losses - Schedule of Past Due Loans and Nonaccrual Loans (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Total Past Due Loans	$ 3,262,152	$ 4,042,132
Nonaccrual Loans	1,674,656	246,320
Current Loans	325,254,503	288,254,679
Total Loans	330,191,311	292,543,131
Financing Receivables, 30 to 89 Days Past Due [Member]
Total Past Due Loans	3,262,152	4,042,132
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total Past Due Loans	0	0
Commercial, Financial and Agricultural Loans [Member]
Total Past Due Loans	364,527	1,264,998
Nonaccrual Loans	394,455	38,798
Current Loans	72,387,415	69,695,627
Total Loans	73,146,397	70,999,423
Commercial, Financial and Agricultural Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Total Past Due Loans	364,527	1,264,998
Commercial, Financial and Agricultural Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total Past Due Loans	0	0
Construction Loans [Member]
Total Past Due Loans	198,861	66,931
Nonaccrual Loans	0	207,522
Current Loans	22,088,151	25,724,842
Total Loans	22,287,012	25,999,295
Construction Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Total Past Due Loans	198,861	66,931
Construction Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total Past Due Loans	0	0
Commercial Mortgage Loans [Member]
Total Past Due Loans	645,214	1,268,405
Nonaccrual Loans	757,085	0
Current Loans	105,056,043	90,464,407
Total Loans	106,458,342	91,732,812
Commercial Mortgage Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Total Past Due Loans	645,214	1,268,405
Commercial Mortgage Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total Past Due Loans	0	0
Residential Loans [Member]
Total Past Due Loans	2,023,517	1,376,671
Nonaccrual Loans	518,301	0
Current Loans	96,617,789	81,894,312
Total Loans	99,159,607	83,270,983
Residential Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Total Past Due Loans	2,023,517	1,376,671
Residential Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total Past Due Loans	0	0
Agricultural Loans [Member]
Total Past Due Loans	0	0
Nonaccrual Loans	0	0
Current Loans	25,373,621	16,580,126
Total Loans	25,373,621	16,580,126
Agricultural Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Total Past Due Loans	0	0
Agricultural Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total Past Due Loans	0	0
Consumer and Other Loans [Member]
Total Past Due Loans	30,033	65,127
Nonaccrual Loans	4,815	0
Current Loans	3,731,484	3,895,365
Total Loans	3,766,332	3,960,492
Consumer and Other Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Total Past Due Loans	30,033	65,127
Consumer and Other Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total Past Due Loans	$ 0	$ 0