Loans and Allowance for Loan Losses - Past Due Loans and Nonaccrual Loans (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
30-89 Days Past Due	$ 6,690,797	$ 4,042,132
Greater than 90 Days	8,240	0
Total Past Due Loans	6,699,037	4,042,132
Nonaccrual Loans	1,285,161	246,320
Current Loans	314,669,579	288,254,679
Total Loans	322,653,777	292,543,131
Commercial, Financial and Agricultural Loans [Member]
30-89 Days Past Due	3,893,901	1,264,998
Greater than 90 Days	8,240	0
Total Past Due Loans	3,902,141	1,264,998
Nonaccrual Loans	55,509	38,798
Current Loans	72,796,705	69,695,627
Total Loans	76,754,355	70,999,423
Construction Loans [Member]
30-89 Days Past Due	295,365	66,931
Greater than 90 Days	0	0
Total Past Due Loans	295,365	66,931
Nonaccrual Loans	0	207,522
Current Loans	25,955,942	25,724,842
Total Loans	26,251,307	25,999,295
Commercial Mortgage Loans [Member]
30-89 Days Past Due	1,321,713	1,268,405
Greater than 90 Days	0	0
Total Past Due Loans	1,321,713	1,268,405
Nonaccrual Loans	0	0
Current Loans	97,792,873	90,464,407
Total Loans	99,114,586	91,732,812
Residential Loans [Member]
30-89 Days Past Due	933,428	1,376,671
Greater than 90 Days	0	0
Total Past Due Loans	933,428	1,376,671
Nonaccrual Loans	325,810	0
Current Loans	90,798,337	81,894,312
Total Loans	92,057,575	83,270,983
Agricultural Loans [Member]
30-89 Days Past Due	190,772	0
Greater than 90 Days	0	0
Total Past Due Loans	190,772	0
Nonaccrual Loans	903,842	0
Current Loans	23,347,538	16,580,126
Total Loans	24,442,152	16,580,126
Consumer and Other Loans [Member]
30-89 Days Past Due	55,618	65,127
Greater than 90 Days	0	0
Total Past Due Loans	55,618	65,127
Nonaccrual Loans	0	0
Current Loans	3,978,184	3,895,365
Total Loans	$ 4,033,802	$ 3,960,492