Loans Allowance For Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses	$ 2,504	$ 5,448	$ 3,772
Period-end amount allocated to:
Percentage Growth in Loans and Leases Receivable, Net of Deferred Income	5.00%
Growth in Loans and Leases Receivable, Net of Deferred Income	$ 144,700
Individual review of impairment of unpaid principal balances in excess of				$ 1,000
Loans, net of deferred fees and costs (a)				2,873,525	$ 2,728,778
Financial Asset Originated [Member]
Period-end amount allocated to:
Loans, net of deferred fees and costs (a)				2,273,839	2,156,030
Financial Asset Acquired and No Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	383
Charge-offs	(3)
Ending balance	383			595	383
Period-end amount allocated to:
Ending balance	383			595	383
(Recovery of) provision for loan losses	215	383
Consumer | Financial Asset Originated [Member]
Period-end amount allocated to:
Loans, net of deferred fees and costs (a)				487,979	478,841
Loan Type
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	19,659	18,685
Charge-offs	(4,473)	(5,187)
Recoveries	3,333	1,143
Allowance for Loan and Lease Losses Write-offs, Net	(1,140)	(4,044)
Provision for loan losses	2,308	5,018
Ending balance	19,659	18,685	18,685	20,827	19,659
Period-end amount allocated to:
Loans individually evaluated for impairment				1,212	509
Loans collectively evaluated for impairment				19,615	19,150
Ending balance	19,659	18,685	18,685	20,827	19,659
Individual review of impairment of unpaid principal balances in excess of				47,578	48,375
Financing Receivable, Collectively Evaluated for Impairment				2,226,261	2,107,655
Loans, net of deferred fees and costs (a)				2,873,525	2,728,778
Loan Type | Financial Asset Originated [Member]
Period-end amount allocated to:
Loans, net of deferred fees and costs (a)				2,273,839	2,156,030
Commercial real estate, other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	8,003	7,797
Charge-offs	(153)	(849)
Recoveries	151	60
Allowance for Loan and Lease Losses Write-offs, Net	(2)	(789)
Provision for loan losses	(668)	995
Ending balance	8,003	7,797	7,797	7,333	8,003
Period-end amount allocated to:
Ending balance	8,003	7,797	7,797	7,333	8,003
Commercial real estate, other | Financial Asset Originated [Member]
Period-end amount allocated to:
Loans, net of deferred fees and costs (a)				671,576	632,200
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	6,178	5,813
Charge-offs	(1,062)	(38)
Recoveries	2,415	18
Allowance for Loan and Lease Losses Write-offs, Net	1,353	(20)
Provision for loan losses	901	385
Ending balance	6,178	5,813	5,813	8,432	6,178
Period-end amount allocated to:
Loans individually evaluated for impairment				698	157
Loans collectively evaluated for impairment				7,734	6,021
Ending balance	6,178	5,813	5,813	8,432	6,178
Individual review of impairment of unpaid principal balances in excess of				5,123	3,226
Financing Receivable, Collectively Evaluated for Impairment				617,052	526,981
Commercial and industrial | Financial Asset Originated [Member]
Period-end amount allocated to:
Loans, net of deferred fees and costs (a)				622,175	530,207
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,214	904
Charge-offs	(312)	(355)
Recoveries	229	232
Allowance for Loan and Lease Losses Write-offs, Net	(83)	(123)
Provision for loan losses	60	433
Ending balance	1,214	904	904	1,191	1,214
Period-end amount allocated to:
Loans individually evaluated for impairment				15	154
Loans collectively evaluated for impairment				1,176	1,060
Ending balance	1,214	904	904	1,191	1,214
Individual review of impairment of unpaid principal balances in excess of				24,689	24,678
Financing Receivable, Collectively Evaluated for Impairment				290,246	272,182
Residential real estate | Financial Asset Originated [Member]
Period-end amount allocated to:
Loans, net of deferred fees and costs (a)				314,935	296,860
Home equity lines of credit
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	618	693
Charge-offs	(55)	(107)
Recoveries	11	14
Allowance for Loan and Lease Losses Write-offs, Net	(44)	(93)
Provision for loan losses	(28)	18
Ending balance	618	693	693	546	618
Period-end amount allocated to:
Loans individually evaluated for impairment				9	73
Loans collectively evaluated for impairment				537	545
Ending balance	618	693	693	546	618
Individual review of impairment of unpaid principal balances in excess of				1,584	2,293
Financing Receivable, Collectively Evaluated for Impairment				91,429	91,033
Home equity lines of credit | Financial Asset Originated [Member]
Period-end amount allocated to:
Loans, net of deferred fees and costs (a)				93,013	93,326
Consumer, indirect
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,214	2,944
Charge-offs	(1,829)	(2,515)
Recoveries	270	474
Allowance for Loan and Lease Losses Write-offs, Net	(1,559)	(2,041)
Provision for loan losses	1,282	2,311
Ending balance	3,214	2,944	2,944	2,937	3,214
Period-end amount allocated to:
Loans individually evaluated for impairment				53	0
Loans collectively evaluated for impairment				2,884	3,214
Ending balance	3,214	2,944	2,944	2,937	3,214
Individual review of impairment of unpaid principal balances in excess of				792	503
Financing Receivable, Collectively Evaluated for Impairment				416,335	406,664
Consumer, indirect | Financial Asset Originated [Member]
Period-end amount allocated to:
Loans, net of deferred fees and costs (a)				417,127	407,167
Consumer, direct
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	351	464
Charge-offs	(211)	(358)
Recoveries	52	140
Allowance for Loan and Lease Losses Write-offs, Net	(159)	(218)
Provision for loan losses	102	105
Ending balance	351	464	464	294	351
Period-end amount allocated to:
Loans individually evaluated for impairment				7	6
Loans collectively evaluated for impairment				287	345
Ending balance	351	464	464	294	351
Individual review of impairment of unpaid principal balances in excess of				384
Financing Receivable, Collectively Evaluated for Impairment				70,468	71,595
Consumer, direct | Financial Asset Originated [Member]
Period-end amount allocated to:
Loans, net of deferred fees and costs (a)				70,852	71,674
Deposit account overdrafts
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	81	70
Charge-offs	(851)	(965)
Recoveries	205	205
Allowance for Loan and Lease Losses Write-offs, Net	(646)	(760)
Provision for loan losses	659	771
Ending balance	81	70	70	94	81
Period-end amount allocated to:
Loans individually evaluated for impairment					0
Loans collectively evaluated for impairment				94	81
Ending balance	81	70	70	94	81
Individual review of impairment of unpaid principal balances in excess of				0	0
Financing Receivable, Collectively Evaluated for Impairment				878	583
Deposit account overdrafts | Financial Asset Originated [Member]
Period-end amount allocated to:
Loans, net of deferred fees and costs (a)				878	583
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	153	108
Ending balance	153	108	108	134	153
Period-end amount allocated to:
Ending balance	153	108	$ 108	134	153
(Recovery of) provision for loan losses	(19)	47
Acquired Purchased Credit Impaired Loans [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge-offs	0	$ (2)
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	8,003
Ending balance	8,003			7,333	8,003
Period-end amount allocated to:
Loans individually evaluated for impairment				430	119
Loans collectively evaluated for impairment				6,903	7,884
Ending balance	$ 8,003			7,333	8,003
Individual review of impairment of unpaid principal balances in excess of				15,006	17,596
Financing Receivable, Collectively Evaluated for Impairment				739,853	738,617
Commercial real estate | Financial Asset Originated [Member]
Period-end amount allocated to:
Loans, net of deferred fees and costs (a)				$ 754,859	$ 756,213