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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses Allowance for Loan and Lease Losses 2 (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	$ 16,155	$ 16,029
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	3,365	4,396
Allowance for loan and lease losses	19,520	20,425	$ 18,763
Financing Receivable, Collectively Evaluated for Impairment	1,694,623	1,593,576
Financing Receivable, Individually Evaluated for Impairment	20,753	25,308
Loans and Leases Receivable, Gross	1,715,376	1,619,057
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		0
Financing Receivable, Individually Evaluated for Impairment		173
Total commercial real estate
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	9,770	10,987
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,082	675
Allowance for loan and lease losses	10,852	11,662	10,131
Financing Receivable, Collectively Evaluated for Impairment	1,148,070	1,086,254
Financing Receivable, Individually Evaluated for Impairment	6,031	7,914
Loans and Leases Receivable, Gross	1,154,101	1,094,339
Total commercial real estate | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		0
Financing Receivable, Individually Evaluated for Impairment		171
Commercial and Industrial Loans and Leases Receivable [Member]
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	5,795	4,369
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	2,283	3,710
Allowance for loan and lease losses	8,078	8,079	8,225
Financing Receivable, Collectively Evaluated for Impairment	517,030	478,385
Financing Receivable, Individually Evaluated for Impairment	14,575	17,104
Loans and Leases Receivable, Gross	531,605	495,491
Commercial and Industrial Loans and Leases Receivable [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		0
Financing Receivable, Individually Evaluated for Impairment		2
Total consumer and other
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	590	673
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	11
Allowance for loan and lease losses	590	684	$ 407
Financing Receivable, Collectively Evaluated for Impairment	29,523	28,937
Financing Receivable, Individually Evaluated for Impairment	147	290
Loans and Leases Receivable, Gross	$ 29,670	29,227
Total consumer and other | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		0
Financing Receivable, Individually Evaluated for Impairment		$ 0

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- Definition

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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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 before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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