Loans and Allowance for Loan Losses - Schedule of Impaired Loans Segregated by Class of Loans (Details) - USD ($)	9 Months Ended	12 Months Ended
Sep. 30, 2017	Dec. 31, 2016
Unpaid Principal Balance	$ 4,951,615	$ 3,702,613
Recorded Investment With No Allowance	1,468,999	611,044
Recorded Investment With Allowance	3,281,141	2,949,857
Total Recorded Investment	4,750,140	3,560,901
Related Allowance	472,063	549,429
Year-to-date Average Recorded Investment	10,557,954	8,325,530
Interest Income Received During Impairment	156,041	192,071
Commercial, Financial and Agricultural Loans [Member]
Unpaid Principal Balance	310,921	102,086
Recorded Investment With No Allowance	0	4,798
Recorded Investment With Allowance	310,921	97,288
Total Recorded Investment	310,921	102,086
Related Allowance	12,012	12,021
Year-to-date Average Recorded Investment	131,489	21,154
Interest Income Received During Impairment	8,363	2,464
Construction Loans [Member]
Unpaid Principal Balance	440,956	247,015
Recorded Investment With No Allowance	320,156	126,215
Recorded Investment With Allowance	0	0
Total Recorded Investment	320,156	126,215
Related Allowance	0	0
Year-to-date Average Recorded Investment	235,379	168,432
Interest Income Received During Impairment	13,688	12,691
Commercial Mortgage Loans [Member]
Unpaid Principal Balance	1,617,584	880,670
Recorded Investment With No Allowance	757,085	0
Recorded Investment With Allowance	860,499	880,670
Total Recorded Investment	1,617,584	880,670
Related Allowance	225,302	245,472
Year-to-date Average Recorded Investment	4,748,813	4,005,175
Interest Income Received During Impairment	41,683	46,195
Residential Loans [Member]
Unpaid Principal Balance	2,408,020	2,223,421
Recorded Investment With No Allowance	243,383	230,610
Recorded Investment With Allowance	2,083,962	1,971,899
Total Recorded Investment	2,327,345	2,202,509
Related Allowance	229,055	291,936
Year-to-date Average Recorded Investment	4,748,549	3,272,528
Interest Income Received During Impairment	86,316	122,370
Agricultural Loans [Member]
Unpaid Principal Balance	146,907	246,175
Recorded Investment With No Allowance	146,907	246,175
Recorded Investment With Allowance	0	0
Total Recorded Investment	146,907	246,175
Related Allowance	0	0
Year-to-date Average Recorded Investment	685,432	851,740
Interest Income Received During Impairment	5,734	8,150
Consumer and Other Loans [Member]
Unpaid Principal Balance	27,227	3,246
Recorded Investment With No Allowance	1,468	3,246
Recorded Investment With Allowance	25,759	0
Total Recorded Investment	27,227	3,246
Related Allowance	5,694	0
Year-to-date Average Recorded Investment	8,292	6,501
Interest Income Received During Impairment	$ 257	$ 201

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://www.xbrl.org/2003/role/presentationRef
-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://www.xbrl.org/2003/role/presentationRef
-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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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5278-111524

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