Loans and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details) - USD ($)	9 Months Ended	12 Months Ended
Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 3,347,000	$ 7,741,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	3,246,000	7,990,000
Financing Receivable, Modifications, Recorded Investment	2,391,000	7,020,000
Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment		14,000
Financing Receivable, Modifications, Post-Modification Recorded Investment		14,000
Financing Receivable, Modifications, Recorded Investment		1,000
Commercial Portfolio [Member] \| Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment		4,110,000
Financing Receivable, Modifications, Post-Modification Recorded Investment		4,460,000
Financing Receivable, Modifications, Recorded Investment		4,302,000
Commercial Portfolio [Member] \| Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	2,670,000	2,940,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	2,571,000	2,841,000
Financing Receivable, Modifications, Recorded Investment	1,894,000	2,201,000
Residential Portfolio [Member] \| Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	677,000	677,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	675,000	675,000
Financing Receivable, Modifications, Recorded Investment	$ 497,000	$ 516,000

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

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Amount, before troubled debt restructuring, of financing receivable to be modified.

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Amount of financing receivable modified as troubled debt restructuring.

+ 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=118936363&loc=SL6953676-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554

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