Loans and Allowance - Impaired Financing Receivables (Details 5) - USD ($)	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	$ 1,749,978	$ 2,495,915	$ 4,685,183
Unpaid Principal Balance with specific reserves	1,778,616	2,495,915	4,685,183
Interest Income Recognized with specific reserves	66,129	67,321	220,420
Specific Reserve with specific reserves	529,513	1,103,686	1,270,159
Average Recorded Investment with specific reserves	1,843,964	2,552,232	4,791,097
Recorded Investment with no specific reserve	3,266,794	2,630,863	1,760,493
Unpaid Principal Balance with no specific reserve	4,158,860	2,848,307	1,821,688
Interest Income Recognized with no specific reserve	79,889	54,146	51,189
Average Recorded Investment with no specific reserve	4,131,872	2,499,805	1,430,076
Mortgage Residential
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	1,393,327	1,809,429	2,726,247
Unpaid Principal Balance with specific reserves	1,421,965	1,809,429	2,726,247
Interest Income Recognized with specific reserves	58,115	56,804	177,707
Specific Reserve with specific reserves	251,504	697,088	682,642
Average Recorded Investment with specific reserves	1,442,544	1,820,233	2,747,299
Recorded Investment with no specific reserve	1,478,571	982,810	204,896
Unpaid Principal Balance with no specific reserve	2,218,332	1,115,579	266,091
Interest Income Recognized with no specific reserve	20,983	14,664	2,641
Average Recorded Investment with no specific reserve	2,463,089	1,170,747	340,435
Mortgage Commercial
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves		300,112	1,094,708
Unpaid Principal Balance with specific reserves		300,112	1,094,708
Interest Income Recognized with specific reserves			783
Specific Reserve with specific reserves		100,745	148,791
Average Recorded Investment with specific reserves		314,929	1,162,367
Recorded Investment with no specific reserve	1,412,914	843,205	1,061,108
Unpaid Principal Balance with no specific reserve	1,565,219	843,205	1,061,108
Interest Income Recognized with no specific reserve	58,797	37,786	48,548
Average Recorded Investment with no specific reserve	1,593,903	876,376	1,089,641
Consumer and indirect
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	128,151	145,874	611,728
Unpaid Principal Balance with specific reserves	128,151	145,874	611,728
Interest Income Recognized with specific reserves			30,903
Specific Reserve with specific reserves	49,509	65,353	186,226
Average Recorded Investment with specific reserves	166,841	170,499	622,854
Recorded Investment with no specific reserve	182,320	364,695	60,656
Unpaid Principal Balance with no specific reserve	182,320	449,370	60,656
Interest Income Recognized with no specific reserve	109	1,696
Average Recorded Investment with no specific reserve	74,880	452,682
Installment
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves
Unpaid Principal Balance with specific reserves
Interest Income Recognized with specific reserves
Specific Reserve with specific reserves
Average Recorded Investment with specific reserves
Recorded Investment with no specific reserve	192,989	440,153	433,833
Unpaid Principal Balance with no specific reserve	192,989	440,153	433,833
Interest Income Recognized with no specific reserve
Average Recorded Investment with no specific reserve
Home Equity
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves
Unpaid Principal Balance with specific reserves
Interest Income Recognized with specific reserves
Specific Reserve with specific reserves
Average Recorded Investment with specific reserves
Recorded Investment with no specific reserve
Unpaid Principal Balance with no specific reserve
Interest Income Recognized with no specific reserve
Average Recorded Investment with no specific reserve
Commercial
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	228,500	240,500	252,500
Unpaid Principal Balance with specific reserves	228,500	240,500	252,500
Interest Income Recognized with specific reserves	8,014	10,517	11,027
Specific Reserve with specific reserves	228,500	240,500	252,500
Average Recorded Investment with specific reserves	234,579	246,571	258,577
Recorded Investment with no specific reserve
Unpaid Principal Balance with no specific reserve
Interest Income Recognized with no specific reserve
Average Recorded Investment with no specific reserve

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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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 17
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524

Reference 2: 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=66008989&loc=d3e5212-111524

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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 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66008989&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 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66008989&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=66008989&loc=d3e5258-111524

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