Loans and the Allowance for Loan Losses, Impaired Loans (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2019	Dec. 31, 2018
Receivables [Abstract]
Unpaid Principal Balance	$ 12,461	$ 18,970
Recorded Investment, Without Valuation Allowance	6,700	15,249
Recorded Investment, With Valuation Allowance	4,661	931
Associated Allowance	874	116
Average Recorded Investment	11,449	18,268
Interest Income Recognized	132	549
Mortgage Loans on Real Estate [Member]
Receivables [Abstract]
Unpaid Principal Balance	11,923	18,548
Recorded Investment, Without Valuation Allowance	6,248	15,171
Recorded Investment, With Valuation Allowance	4,661	711
Associated Allowance	874	105
Average Recorded Investment	10,987	17,779
Interest Income Recognized	126	544
Mortgage Loans on Real Estate [Member] \| Residential 1-4 Family [Member]
Receivables [Abstract]
Unpaid Principal Balance	1,522	2,057
Recorded Investment, Without Valuation Allowance	1,330	1,686
Recorded Investment, With Valuation Allowance	89	239
Associated Allowance	44	51
Average Recorded Investment	1,427	2,073
Interest Income Recognized	5	66
Mortgage Loans on Real Estate [Member] \| Commercial [Member]
Receivables [Abstract]
Unpaid Principal Balance	10,065	15,254
Recorded Investment, Without Valuation Allowance	4,918	12,721
Recorded Investment, With Valuation Allowance	4,236	0
Associated Allowance	714	0
Average Recorded Investment	9,222	14,232
Interest Income Recognized	114	455
Mortgage Loans on Real Estate [Member] \| Construction [Member]
Receivables [Abstract]
Unpaid Principal Balance	89	509
Recorded Investment, Without Valuation Allowance	0	417
Recorded Investment, With Valuation Allowance	89	92
Associated Allowance	15	18
Average Recorded Investment	90	665
Interest Income Recognized	3	7
Mortgage Loans on Real Estate [Member] \| Second Mortgages [Member]
Receivables [Abstract]
Unpaid Principal Balance	247	496
Recorded Investment, Without Valuation Allowance	0	347
Recorded Investment, With Valuation Allowance	247	148
Associated Allowance	101	33
Average Recorded Investment	248	508
Interest Income Recognized	4	15
Mortgage Loans on Real Estate [Member] \| Equity Line of Credit [Member]
Receivables [Abstract]
Unpaid Principal Balance	0	232
Recorded Investment, Without Valuation Allowance	0	0
Recorded Investment, With Valuation Allowance	0	232
Associated Allowance	0	3
Average Recorded Investment	0	301
Interest Income Recognized	0	1
Commercial [Member] \| Commercial and Industrial Loans [Member]
Receivables [Abstract]
Unpaid Principal Balance	516	384
Recorded Investment, Without Valuation Allowance	430	78
Recorded Investment, With Valuation Allowance	0	220
Associated Allowance	0	11
Average Recorded Investment	439	446
Interest Income Recognized	5	5
Consumer [Member] \| Other Consumer Loans [Member]
Receivables [Abstract]
Unpaid Principal Balance	22	38
Recorded Investment, Without Valuation Allowance	22	0
Recorded Investment, With Valuation Allowance	0	0
Associated Allowance	0	0
Average Recorded Investment	23	43
Interest Income Recognized	$ 1	$ 0

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=118936363&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=118936363&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
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-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953550-111524

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