Loans and Allowance for Loan Losses - Schedule of Impaired Loans Segregated by Class of Loans (Details) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Unpaid Principal Balance	$ 4,187,966	$ 5,265,922
Recorded Investment With No Allowance	2,686,743	2,204,527
Recorded Investment With Allowance	1,669,638	2,691,203
Total Recorded Investment	4,356,381	4,895,730	$ 3,560,901
Related Allowance	518,230	331,779	$ 549,429
Year-to-date Average Recorded Investment	3,817,174	3,789,822
Interest Income Received During Impairment	257,334	207,180
Commercial, Financial and Agricultural Loans [Member]
Unpaid Principal Balance	184,899	459,003
Recorded Investment With No Allowance	87,525	208,032
Recorded Investment With Allowance	568,816	250,971
Total Recorded Investment	656,341	459,003
Related Allowance	276,392	44,468
Year-to-date Average Recorded Investment	370,038	169,930
Interest Income Received During Impairment	52,411	10,920
Construction Loans [Member]
Unpaid Principal Balance	402,234	549,599
Recorded Investment With No Allowance	281,434	428,799
Recorded Investment With Allowance	0	0
Total Recorded Investment	281,434	428,799
Related Allowance	0	0
Year-to-date Average Recorded Investment	281,434	162,698
Interest Income Received During Impairment	25,364	24,487
Commercial Mortgage Loans [Member]
Unpaid Principal Balance	1,787,305	1,615,811
Recorded Investment With No Allowance	1,277,611	1,107,654
Recorded Investment With Allowance	333,892	339,440
Total Recorded Investment	1,611,503	1,447,094
Related Allowance	51,854	57,403
Year-to-date Average Recorded Investment	1,544,299	1,071,663
Interest Income Received During Impairment	45,403	54,582
Residential Loans [Member]
Unpaid Principal Balance	1,801,002	2,476,728
Recorded Investment With No Allowance	1,027,647	316,230
Recorded Investment With Allowance	752,443	2,079,823
Total Recorded Investment	1,780,090	2,396,053
Related Allowance	188,368	224,916
Year-to-date Average Recorded Investment	1,594,390	2,233,562
Interest Income Received During Impairment	127,806	108,472
Agricultural Loans [Member]
Unpaid Principal Balance	12,526	142,966
Recorded Investment With No Allowance	12,526	142,966
Recorded Investment With Allowance	0	0
Total Recorded Investment	12,526	142,966
Related Allowance	0	0
Year-to-date Average Recorded Investment	12,526	142,966
Interest Income Received During Impairment	5,530	8,198
Consumer and Other Loans [Member]
Unpaid Principal Balance	0	21,815
Recorded Investment With No Allowance	0	846
Recorded Investment With Allowance	14,487	20,969
Total Recorded Investment	14,487	21,815
Related Allowance	1,616	4,992
Year-to-date Average Recorded Investment	14,487	9,003
Interest Income Received During Impairment	$ 820	$ 521

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5278-111524

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