Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for loan losses [Roll Forward]
Beginning balance	$ 35,908	$ 36,151	$ 35,933
Provision charged to expense	4,819	6,167	7,521
Losses charged off	(9,736)	(10,998)	(11,085)
Recoveries	4,105	4,588	3,782
Ending balance	35,096	35,908	36,151
Ending balance [Abstract]
Individually evaluated for impairment	1,212	801	991
Collectively evaluated for impairment	33,884	35,107	35,160
Loans ending balance [Abstract]
Individually evaluated for impairment	57,771	46,366	47,412
Collectively evaluated for impairment	3,190,893	3,162,272	3,075,528
Commercial [Member] \| Construction [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	862	686	884
Provision charged to expense	497	115	(237)
Losses charged off	(72)	0	(10)
Recoveries	12	61	49
Ending balance	1,299	862	686
Ending balance [Abstract]
Individually evaluated for impairment	99	50	25
Collectively evaluated for impairment	1,200	812	661
Loans ending balance [Abstract]
Individually evaluated for impairment	3,010	4,227	4,584
Collectively evaluated for impairment	101,799	78,488	71,895
Commercial [Member] \| Real Estate [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	14,531	14,509	14,191
Provision charged to expense	(137)	786	2,281
Losses charged off	(727)	(988)	(2,038)
Recoveries	358	224	75
Ending balance	14,025	14,531	14,509
Ending balance [Abstract]
Individually evaluated for impairment	227	605	966
Collectively evaluated for impairment	13,798	13,926	13,543
Loans ending balance [Abstract]
Individually evaluated for impairment	41,379	31,499	31,465
Collectively evaluated for impairment	1,128,596	1,151,594	1,157,215
Commercial [Member] \| Equipment Lease Financing [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	12	18	42
Provision charged to expense	(8)	(6)	(24)
Losses charged off	0	0	0
Recoveries	0	0	0
Ending balance	4	12	18
Ending balance [Abstract]
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	4	12	18
Loans ending balance [Abstract]
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	481	1,740	3,042
Commercial [Member] \| Other [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	4,993	5,039	4,656
Provision charged to expense	3,032	824	1,744
Losses charged off	(2,179)	(1,513)	(1,893)
Recoveries	509	643	532
Ending balance	6,355	4,993	5,039
Ending balance [Abstract]
Individually evaluated for impairment	886	146	0
Collectively evaluated for impairment	5,469	4,847	5,039
Loans ending balance [Abstract]
Individually evaluated for impairment	11,073	8,758	9,481
Collectively evaluated for impairment	378,610	368,440	341,553
Residential [Member] \| Construction [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	512	660	629
Provision charged to expense	(40)	(115)	31
Losses charged off	(100)	(33)	0
Recoveries	0	0	0
Ending balance	372	512	660
Ending balance [Abstract]
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	372	512	660
Loans ending balance [Abstract]
Individually evaluated for impairment	0	0	318
Collectively evaluated for impairment	63,350	57,160	67,040
Residential [Member] \| Real Estate [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	4,433	5,688	6,027
Provision charged to expense	414	(336)	189
Losses charged off	(767)	(1,004)	(615)
Recoveries	152	85	87
Ending balance	4,232	4,433	5,688
Ending balance [Abstract]
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	4,232	4,433	5,688
Loans ending balance [Abstract]
Individually evaluated for impairment	2,309	1,882	1,564
Collectively evaluated for impairment	730,694	720,535	708,006
Residential [Member] \| Home Equity [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	841	857	774
Provision charged to expense	172	39	257
Losses charged off	(139)	(69)	(178)
Recoveries	23	14	4
Ending balance	897	841	857
Ending balance [Abstract]
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	897	841	857
Loans ending balance [Abstract]
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	111,894	106,299	99,356
Consumer [Member] \| Consumer Direct [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	1,883	1,863	1,885
Provision charged to expense	528	572	418
Losses charged off	(1,100)	(997)	(965)
Recoveries	400	445	525
Ending balance	1,711	1,883	1,863
Ending balance [Abstract]
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	1,711	1,883	1,863
Loans ending balance [Abstract]
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	148,051	144,289	137,754
Consumer [Member] \| Consumer Indirect [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	7,841	6,831	6,845
Provision charged to expense	361	4,288	2,862
Losses charged off	(4,652)	(6,394)	(5,386)
Recoveries	2,651	3,116	2,510
Ending balance	6,201	7,841	6,831
Ending balance [Abstract]
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	6,201	7,841	6,831
Loans ending balance [Abstract]
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	$ 527,418	$ 533,727	$ 489,667

No definition available.

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- Definition

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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