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Loans, Nonaccrual Loans Segregated by Class of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Aging [Abstract]
Total nonaccrual loans	$ 13,999	$ 11,867
Commercial [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total nonaccrual loans	230	639
Commercial [Member] | Real Estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total nonaccrual loans	3,759	4,537
Commercial [Member] | Other [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total nonaccrual loans	3,839	797
Residential [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total nonaccrual loans	634	22
Residential [Member] | Real Estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total nonaccrual loans	4,821	5,395
Residential [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total nonaccrual loans	$ 716	$ 477

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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 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5111-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447

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