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Allowance for Credit Losses and Credit Quality of Loans, Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) Contract	Sep. 30, 2019 USD ($) Contract	Sep. 30, 2020 USD ($) Contract	Sep. 30, 2019 USD ($) Contract
Troubled Debt Restructuring [Abstract]
Number of contracts | Contract	10	3	25	31
Pre-modification outstanding recorded investment	$ 659	$ 216	$ 1,663	$ 1,947
Post-modification outstanding recorded investment	$ 715	$ 240	$ 1,789	$ 2,011
Number of contracts | Contract	9	19	47	45
Recorded Investment	$ 299	$ 914	$ 2,835	$ 2,213
Commercial Loans [Member]
Troubled Debt Restructuring [Abstract]
Number of contracts | Contract	0		2
Recorded Investment	$ 0		$ 555
Commercial Loans [Member] | C&I [Member]
Troubled Debt Restructuring [Abstract]
Number of contracts | Contract	0		1
Recorded Investment	$ 0		$ 387
Commercial Loans [Member] | CRE [Member]
Troubled Debt Restructuring [Abstract]
Number of contracts | Contract	0		1
Recorded Investment	$ 0		$ 168
Consumer Loans [Member]
Troubled Debt Restructuring [Abstract]
Number of contracts | Contract	0		1
Pre-modification outstanding recorded investment	$ 0		$ 44
Post-modification outstanding recorded investment	$ 0		$ 44
Consumer Loans [Member] | Auto [Member]
Troubled Debt Restructuring [Abstract]
Number of contracts | Contract	0		1
Pre-modification outstanding recorded investment	$ 0		$ 44
Post-modification outstanding recorded investment	$ 0		$ 44
Residential [Member]
Troubled Debt Restructuring [Abstract]
Number of contracts | Contract	10		24
Pre-modification outstanding recorded investment	$ 659		$ 1,619
Post-modification outstanding recorded investment	$ 715		$ 1,745
Number of contracts | Contract	9		45
Recorded Investment	$ 299		$ 2,280

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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Amount, after troubled debt restructuring, of modified financing receivable.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 310
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