Loans and Allowance for Loan Losses - Schedule of Allowance for Loan Losses Methodology (Details) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Beginning balance	$ 3,192,697	$ 3,043,632	$ 3,124,611
Charge-offs	365,984	582,505	447,747
Recoveries	2,385	12,471	66,768
Net charge-offs	363,599	570,034	380,979
Provisions charged to operations	249,000	604,500	300,000
Individually evaluated for impairment	628,452	628,452	331,779
Collectively evaluated for impairment	2,449,646	2,449,646	2,711,853
Balance at end of period	3,078,098	3,078,098	3,043,632
Individually evaluated for impairment	5,359,091	5,359,091	8,062,312
Collectively evaluated for impairment	361,303,122	361,303,122	322,128,999
Balance at end of period	366,662,213	366,662,213	330,191,311
Commercial, Financial and Agricultural [Member]
Beginning balance	437,661	324,260	191,267
Charge-offs	315,792	524,620	113,334
Recoveries	2,184	9,460	63,486
Net charge-offs	313,608	515,160	49,848
Provisions charged to operations	225,030	539,983	182,841
Individually evaluated for impairment	319,392	319,392	44,468
Collectively evaluated for impairment	29,691	29,691	279,792
Balance at end of period	349,083	349,083	324,260
Individually evaluated for impairment	931,437	931,437	459,003
Collectively evaluated for impairment	86,786,230	86,786,230	72,687,394
Balance at end of period	87,717,667	87,717,667	73,146,397
Construction Real Estate [Member]
Beginning balance	938,690	1,043,083	1,043,083
Charge-offs	0	783	0
Recoveries	0	0	0
Net charge-offs	0	783	0
Provisions charged to operations	342	(103,268)	0
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	939,032	939,032	1,043,083
Balance at end of period	939,032	939,032	1,043,083
Individually evaluated for impairment	293,003	293,003	428,799
Collectively evaluated for impairment	30,506,669	30,506,669	21,858,213
Balance at end of period	30,799,672	30,799,672	22,287,012
Commercial Real Estate [Member]
Beginning balance	1,084,477	1,056,595	1,192,098
Charge-offs	43,349	43,349	168,717
Recoveries	0	0	0
Net charge-offs	43,349	43,349	168,717
Provisions charged to operations	18,936	46,818	33,214
Individually evaluated for impairment	53,632	53,632	57,403
Collectively evaluated for impairment	1,006,432	1,006,432	999,192
Balance at end of period	1,060,064	1,060,064	1,056,595
Individually evaluated for impairment	1,615,593	1,615,593	4,561,198
Collectively evaluated for impairment	104,319,595	104,319,595	101,897,144
Balance at end of period	105,935,188	105,935,188	106,458,342
Residential Real Estate [Member]
Beginning balance	445,196	416,474	420,189
Charge-offs	0	6,909	59,764
Recoveries	0	0	0
Net charge-offs	0	6,909	59,764
Provisions charged to operations	3,018	38,649	56,049
Individually evaluated for impairment	253,824	253,824	224,916
Collectively evaluated for impairment	194,390	194,390	191,558
Balance at end of period	448,214	448,214	416,474
Individually evaluated for impairment	2,159,147	2,159,147	2,448,531
Collectively evaluated for impairment	102,638,326	102,638,326	96,711,076
Balance at end of period	104,797,473	104,797,473	99,159,607
Agricultural Real Estate [Member]
Beginning balance	91,022	11,560	86,656
Charge-offs	0	0	93,503
Recoveries	0	1,200	0
Net charge-offs	0	(1,200)	93,503
Provisions charged to operations	(524)	77,738	18,407
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	90,498	90,498	11,560
Balance at end of period	90,498	90,498	11,560
Individually evaluated for impairment	345,405	345,405	142,966
Collectively evaluated for impairment	31,888,829	31,888,829	25,230,655
Balance at end of period	32,234,234	32,234,234	25,373,621
Consumer and Other [Member]
Beginning balance	195,651	191,660	191,318
Charge-offs	6,843	6,844	12,429
Recoveries	201	1,811	3,282
Net charge-offs	6,642	5,033	9,147
Provisions charged to operations	2,198	4,580	9,489
Individually evaluated for impairment	1,604	1,604	4,992
Collectively evaluated for impairment	189,603	189,603	186,668
Balance at end of period	191,207	191,207	191,660
Individually evaluated for impairment	14,506	14,506	21,815
Collectively evaluated for impairment	5,163,473	5,163,473	3,744,517
Balance at end of period	$ 5,177,979	$ 5,177,979	$ 3,766,332