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, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	$ 16,029	$ 14,272
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	4,396	4,491
Allowance for loan and lease losses	20,425	18,763	$ 20,912	$ 16,316
Financing Receivable, Collectively Evaluated for Impairment	1,593,576	1,476,317
Financing Receivable, Individually Evaluated for Impairment	25,308	26,188
Loans and Leases Receivable, Gross	1,619,057	1,503,038
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	173	533
Total commercial real estate
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	10,987	9,716
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	675	415
Allowance for loan and lease losses	11,662	10,131	12,384	11,220
Financing Receivable, Collectively Evaluated for Impairment	1,086,254	1,003,855
Financing Receivable, Individually Evaluated for Impairment	7,914	13,506
Loans and Leases Receivable, Gross	1,094,339	1,017,888
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	0
Financing Receivable, Individually Evaluated for Impairment	171	527
Commercial and Industrial Loans and Leases Receivable [Member]
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	4,369	4,158
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	3,710	4,067
Allowance for loan and lease losses	8,079	8,225	7,970	4,387
Financing Receivable, Collectively Evaluated for Impairment	478,385	447,459
Financing Receivable, Individually Evaluated for Impairment	17,104	12,324
Loans and Leases Receivable, Gross	495,491	459,789
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	0
Financing Receivable, Individually Evaluated for Impairment	2	6
Total consumer and other loans
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	673	398
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	11	9
Allowance for loan and lease losses	684	407	$ 558	$ 709
Financing Receivable, Collectively Evaluated for Impairment	28,937	25,003
Financing Receivable, Individually Evaluated for Impairment	290	358
Loans and Leases Receivable, Gross	29,227	25,361
Total consumer and other loans \| Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	$ 0	$ 0

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
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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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The balance of financing receivables 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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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