Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Allowance for loan losses [Roll Forward]
Beginning balance	$ 35,004	$ 35,189	$ 35,908	$ 36,151	$ 36,151
Provision charged to expense	1,563	1,929	1,753	2,875	6,167
Losses charged off	(2,797)	(2,526)	(4,852)	(5,503)	(10,998)
Recoveries	1,228	1,179	2,189	2,248	4,588
Ending balance	34,998	35,771	34,998	35,771	35,908
Ending balance [Abstract]
Individually evaluated for impairment	875	907	875	907	801
Collectively evaluated for impairment	34,123	34,864	34,123	34,864	35,107
Loans ending balance [Abstract]
Individually evaluated for impairment	54,593	46,743	54,593	46,743	46,366
Collectively evaluated for impairment	3,137,614	3,122,299	3,137,614	3,122,299	3,162,272
Commercial [Member] \| Construction [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	903	686	862	686	686
Provision charged to expense	(36)	51	2	37	115
Losses charged off	(71)	0	(71)	0	0
Recoveries	3	3	6	17	61
Ending balance	799	740	799	740	862
Ending balance [Abstract]
Individually evaluated for impairment	99	0	99	0	50
Collectively evaluated for impairment	700	740	700	740	812
Loans ending balance [Abstract]
Individually evaluated for impairment	3,487	4,299	3,487	4,299	4,227
Collectively evaluated for impairment	62,284	76,897	62,284	76,897	78,488
Commercial [Member] \| Real Estate [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	14,800	14,133	14,531	14,509	14,509
Provision charged to expense	533	788	821	597	786
Losses charged off	(345)	(266)	(380)	(477)	(988)
Recoveries	110	3	126	29	224
Ending balance	15,098	14,658	15,098	14,658	14,531
Ending balance [Abstract]
Individually evaluated for impairment	594	807	594	807	605
Collectively evaluated for impairment	14,504	13,851	14,504	13,851	13,926
Loans ending balance [Abstract]
Individually evaluated for impairment	37,028	31,874	37,028	31,874	31,499
Collectively evaluated for impairment	1,155,740	1,159,837	1,155,740	1,159,837	1,151,594
Commercial [Member] \| Equipment Lease Financing [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	10	23	12	18	18
Provision charged to expense	(3)	(6)	(5)	(1)	(6)
Losses charged off	0	0	0	0	0
Recoveries	0	0	0	0	0
Ending balance	7	17	7	17	12
Ending balance [Abstract]
Individually evaluated for impairment	0	0	0	0	0
Collectively evaluated for impairment	7	17	7	17	12
Loans ending balance [Abstract]
Individually evaluated for impairment	0	0	0	0	0
Collectively evaluated for impairment	962	2,354	962	2,354	1,740
Commercial [Member] \| Other [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	5,217	4,229	4,993	5,039	5,039
Provision charged to expense	238	668	619	16	824
Losses charged off	(824)	(322)	(1,065)	(557)	(1,513)
Recoveries	258	62	342	139	643
Ending balance	4,889	4,637	4,889	4,637	4,993
Ending balance [Abstract]
Individually evaluated for impairment	182	100	182	100	146
Collectively evaluated for impairment	4,707	4,537	4,707	4,537	4,847
Loans ending balance [Abstract]
Individually evaluated for impairment	11,508	8,949	11,508	8,949	8,758
Collectively evaluated for impairment	378,540	343,461	378,540	343,461	368,440
Residential [Member] \| Construction [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	396	633	512	660	660
Provision charged to expense	(38)	(11)	(154)	(14)	(115)
Losses charged off	0	(4)	0	(28)	(33)
Recoveries	0	0	0	0	0
Ending balance	358	618	358	618	512
Ending balance [Abstract]
Individually evaluated for impairment	0	0	0	0	0
Collectively evaluated for impairment	358	618	358	618	512
Loans ending balance [Abstract]
Individually evaluated for impairment	0	0	0	0	0
Collectively evaluated for impairment	57,017	64,817	57,017	64,817	57,160
Residential [Member] \| Real Estate [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	4,053	5,936	4,433	5,688	5,688
Provision charged to expense	299	(493)	21	(58)	(336)
Losses charged off	(180)	(222)	(300)	(415)	(1,004)
Recoveries	15	13	33	19	85
Ending balance	4,187	5,234	4,187	5,234	4,433
Ending balance [Abstract]
Individually evaluated for impairment	0	0	0	0	0
Collectively evaluated for impairment	4,187	5,234	4,187	5,234	4,433
Loans ending balance [Abstract]
Individually evaluated for impairment	2,570	1,621	2,570	1,621	1,882
Collectively evaluated for impairment	720,003	719,075	720,003	719,075	720,535
Residential [Member] \| Home Equity [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	901	862	841	857	857
Provision charged to expense	65	22	150	27	39
Losses charged off	(34)	(18)	(60)	(19)	(69)
Recoveries	1	0	2	1	14
Ending balance	933	866	933	866	841
Ending balance [Abstract]
Individually evaluated for impairment	0	0	0	0	0
Collectively evaluated for impairment	933	866	933	866	841
Loans ending balance [Abstract]
Individually evaluated for impairment	0	0	0	0	0
Collectively evaluated for impairment	109,831	102,432	109,831	102,432	106,299
Consumer [Member] \| Consumer Direct [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	1,635	1,798	1,883	1,863	1,863
Provision charged to expense	400	264	281	343	572
Losses charged off	(331)	(276)	(577)	(491)	(997)
Recoveries	63	124	180	195	445
Ending balance	1,767	1,910	1,767	1,910	1,883
Ending balance [Abstract]
Individually evaluated for impairment	0	0	0	0	0
Collectively evaluated for impairment	1,767	1,910	1,767	1,910	1,883
Loans ending balance [Abstract]
Individually evaluated for impairment	0	0	0	0	0
Collectively evaluated for impairment	145,149	145,376	145,149	145,376	144,289
Consumer [Member] \| Consumer Indirect [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	7,089	6,889	7,841	6,831	6,831
Provision charged to expense	105	646	18	1,928	4,288
Losses charged off	(1,012)	(1,418)	(2,399)	(3,516)	(6,394)
Recoveries	778	974	1,500	1,848	3,116
Ending balance	6,960	7,091	6,960	7,091	7,841
Ending balance [Abstract]
Individually evaluated for impairment	0	0	0	0	0
Collectively evaluated for impairment	6,960	7,091	6,960	7,091	7,841
Loans ending balance [Abstract]
Individually evaluated for impairment	0	0	0	0	0
Collectively evaluated for impairment	$ 508,088	$ 508,050	$ 508,088	$ 508,050	$ 533,727

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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- Definition

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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