Loans and Allowance for Loan Losses - Schedule of Internal Loan Grading by Class of Loans (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Total Loans	$ 335,203,151	$ 330,191,311
Commercial, Financial and Agricultural Loans [Member]
Total Loans	72,884,220	73,146,397
Construction Loans [Member]
Total Loans	24,398,670	22,287,012
Commercial Mortgage Loans [Member]
Total Loans	104,820,909	106,458,342
Residential Loans [Member]
Total Loans	100,818,477	99,159,607
Agricultural Loans [Member]
Total Loans	27,717,796	25,373,621
Consumer and Other Loans [Member]
Total Loans	4,563,079	3,766,332
Rating, Grade 1- Exceptional [Member]
Total Loans	1,383,671	1,720,290
Rating, Grade 1- Exceptional [Member] | Commercial, Financial and Agricultural Loans [Member]
Total Loans	1,111,490	1,371,135
Rating, Grade 1- Exceptional [Member] | Construction Loans [Member]
Total Loans	0	0
Rating, Grade 1- Exceptional [Member] | Commercial Mortgage Loans [Member]
Total Loans	0	0
Rating, Grade 1- Exceptional [Member] | Residential Loans [Member]
Total Loans	23,661	23,919
Rating, Grade 1- Exceptional [Member] | Agricultural Loans [Member]
Total Loans	0	0
Rating, Grade 1- Exceptional [Member] | Consumer and Other Loans [Member]
Total Loans	248,520	325,236
Rating, Grade 2- Above Avg. [Member]
Total Loans	48,125	51,421
Rating, Grade 2- Above Avg. [Member] | Commercial, Financial and Agricultural Loans [Member]
Total Loans	0	0
Rating, Grade 2- Above Avg. [Member] | Construction Loans [Member]
Total Loans	0	0
Rating, Grade 2- Above Avg. [Member] | Commercial Mortgage Loans [Member]
Total Loans	0	0
Rating, Grade 2- Above Avg. [Member] | Residential Loans [Member]
Total Loans	0	0
Rating, Grade 2- Above Avg. [Member] | Agricultural Loans [Member]
Total Loans	0	0
Rating, Grade 2- Above Avg. [Member] | Consumer and Other Loans [Member]
Total Loans	48,125	51,421
Rating, Grade 3- Acceptable [Member]
Total Loans	94,357,719	97,442,348
Rating, Grade 3- Acceptable [Member] | Commercial, Financial and Agricultural Loans [Member]
Total Loans	24,243,340	27,024,359
Rating, Grade 3- Acceptable [Member] | Construction Loans [Member]
Total Loans	1,643,502	2,085,620
Rating, Grade 3- Acceptable [Member] | Commercial Mortgage Loans [Member]
Total Loans	29,507,775	30,090,030
Rating, Grade 3- Acceptable [Member] | Residential Loans [Member]
Total Loans	26,080,766	26,304,640
Rating, Grade 3- Acceptable [Member] | Agricultural Loans [Member]
Total Loans	11,680,790	11,071,244
Rating, Grade 3- Acceptable [Member] | Consumer and Other Loans [Member]
Total Loans	1,201,546	866,455
Rating, Grade 4- Fair [Member]
Total Loans	223,146,223	217,491,441
Rating, Grade 4- Fair [Member] | Commercial, Financial and Agricultural Loans [Member]
Total Loans	42,125,327	42,821,117
Rating, Grade 4- Fair [Member] | Construction Loans [Member]
Total Loans	22,451,918	19,772,593
Rating, Grade 4- Fair [Member] | Commercial Mortgage Loans [Member]
Total Loans	70,039,261	70,518,545
Rating, Grade 4- Fair [Member] | Residential Loans [Member]
Total Loans	69,982,016	68,103,351
Rating, Grade 4- Fair [Member] | Agricultural Loans [Member]
Total Loans	15,523,114	13,781,326
Rating, Grade 4- Fair [Member] | Consumer and Other Loans [Member]
Total Loans	3,024,587	2,494,509
Rating, Grade 5a- Watch [Member]
Total Loans	1,919,738	1,952,751
Rating, Grade 5a- Watch [Member] | Commercial, Financial and Agricultural Loans [Member]
Total Loans	313,223	120,626
Rating, Grade 5a- Watch [Member] | Construction Loans [Member]
Total Loans	0	0
Rating, Grade 5a- Watch [Member] | Commercial Mortgage Loans [Member]
Total Loans	488,963	1,027,581
Rating, Grade 5a- Watch [Member] | Residential Loans [Member]
Total Loans	1,062,844	757,628
Rating, Grade 5a- Watch [Member] | Agricultural Loans [Member]
Total Loans	38,884	39,344
Rating, Grade 5a- Watch [Member] | Consumer and Other Loans [Member]
Total Loans	15,824	7,572
Rating, Grade 5b- OAEM [Member]
Total Loans	8,104,068	5,197,060
Rating, Grade 5b- OAEM [Member] | Commercial, Financial and Agricultural Loans [Member]
Total Loans	3,855,547	557,070
Rating, Grade 5b- OAEM [Member] | Construction Loans [Member]
Total Loans	0	0
Rating, Grade 5b- OAEM [Member] | Commercial Mortgage Loans [Member]
Total Loans	2,778,144	3,073,051
Rating, Grade 5b- OAEM [Member] | Residential Loans [Member]
Total Loans	1,135,067	1,226,841
Rating, Grade 5b- OAEM [Member] | Agricultural Loans [Member]
Total Loans	335,089	338,741
Rating, Grade 5b- OAEM [Member] | Consumer and Other Loans [Member]
Total Loans	221	1,357
Rating, Grade 6- Substandard [Member]
Total Loans	5,940,792	6,029,148
Rating, Grade 6- Substandard [Member] | Commercial, Financial and Agricultural Loans [Member]
Total Loans	932,478	945,238
Rating, Grade 6- Substandard [Member] | Construction Loans [Member]
Total Loans	303,250	428,799
Rating, Grade 6- Substandard [Member] | Commercial Mortgage Loans [Member]
Total Loans	2,006,766	1,749,135
Rating, Grade 6- Substandard [Member] | Residential Loans [Member]
Total Loans	2,534,123	2,743,228
Rating, Grade 6- Substandard [Member] | Agricultural Loans [Member]
Total Loans	139,919	142,966
Rating, Grade 6- Substandard [Member] | Consumer and Other Loans [Member]
Total Loans	24,256	19,782
Rating, Grade 7- Doubtful [Member]
Total Loans	302,815	306,852
Rating, Grade 7- Doubtful [Member] | Commercial, Financial and Agricultural Loans [Member]
Total Loans	302,815	306,852
Rating, Grade 7- Doubtful [Member] | Construction Loans [Member]
Total Loans	0	0
Rating, Grade 7- Doubtful [Member] | Commercial Mortgage Loans [Member]
Total Loans	0	0
Rating, Grade 7- Doubtful [Member] | Residential Loans [Member]
Total Loans	0	0
Rating, Grade 7- Doubtful [Member] | Agricultural Loans [Member]
Total Loans	0	0
Rating, Grade 7- Doubtful [Member] | Consumer and Other Loans [Member]
Total Loans	$ 0	$ 0