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Loan Quality and Allowance for Loan Losses (Impaired Financing Receivables) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	$ 11,926	$ 12,583
Unpaid Principal Balance With No Allowance	22,109	13,223
Average Recorded Investment	16,599	13,803	$ 19,617
Interest Income Recognized	463	474	632
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	920	869
Unpaid Principal Balance With No Allowance	1,007	950
Average Recorded Investment	999	1,147	1,287
Interest Income Recognized	46	39	39
Residential Real Estate [Member] | First Liens [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	871	869
Unpaid Principal Balance With No Allowance	958	950
Average Recorded Investment	914	1,083	1,194
Interest Income Recognized	45	39	38
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	49
Unpaid Principal Balance With No Allowance	49
Average Recorded Investment	85	64	93
Interest Income Recognized	1		1
Residential Real Estate - Construction [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	455	466
Unpaid Principal Balance With No Allowance	531	531
Average Recorded Investment	462	473	492
Interest Income Recognized			4
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	10,236	11,061
Unpaid Principal Balance With No Allowance	10,808	11,541
Average Recorded Investment	10,809	11,938	17,806
Interest Income Recognized	417	435	589
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	315	187
Unpaid Principal Balance With No Allowance	9,763	201
Average Recorded Investment	$ 4,329	$ 245	$ 32

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

+ References

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-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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
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-Publisher FASB
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