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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Past Due Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	$ 21,532	$ 39,271
Current	1,636,114	1,579,786
Non-accrual loans and leases	23,540	25,301
Total gross loans and leases receivable	$ 1,657,646	$ 1,619,057
30 to 59 days past due, percent of total portfolio	0.10%	1.17%
60 to 89 days past due, percent of total portfolio	0.18%	0.16%
Greater than 90 days past due, percent of portfolio	1.02%	1.09%
Past due, percent of total portfolio	1.30%	2.42%
Current, percent of total portfolio	98.70%	97.58%
Gross loans, percent of total portfolio	100.00%	100.00%
Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	$ 4,809	$ 5,820
Current	207,889	197,656
Non-accrual loans and leases	5,166	5,663
Total gross loans and leases receivable	212,698	203,476
Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	31	2,303
Current	479,030	482,124
Non-accrual loans and leases	31	31
Total gross loans and leases receivable	479,061	484,427
Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	119	119
Current	47,384	42,547
Non-accrual loans and leases	2,150	2,213
Total gross loans and leases receivable	47,503	42,666
Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	14,824
Current	169,894	146,738
Non-accrual loans and leases	0	0
Total gross loans and leases receivable	169,894	161,562
Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	184,490	167,868
Non-accrual loans and leases	0	0
Total gross loans and leases receivable	184,490	167,868
1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	423
Current	33,255	33,917
Non-accrual loans and leases	0	0
Total gross loans and leases receivable	33,255	34,340
Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	16,306	15,503
Current	449,971	446,818
Non-accrual loans and leases	15,892	17,104
Total gross loans and leases receivable	466,277	462,321
Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	32,724	33,170
Non-accrual loans and leases	0	0
Total gross loans and leases receivable	32,724	33,170
Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	2	0
Current	8,375	8,438
Non-accrual loans and leases	0	0
Total gross loans and leases receivable	8,377	8,438
Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	265	279
Current	23,102	20,510
Non-accrual loans and leases	301	290
Total gross loans and leases receivable	23,367	20,789
Accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	759	18,749
Current	1,633,347	1,575,007
Accrual loans and leases	1,634,106	1,593,756
Accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	157
Current	207,532	197,656
Accrual loans and leases	207,532	197,813
Accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	2,272
Current	479,030	482,124
Accrual loans and leases	479,030	484,396
Accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	45,353	40,453
Accrual loans and leases	45,353	40,453
Accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	14,824
Current	169,894	146,738
Accrual loans and leases	169,894	161,562
Accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	184,490	167,868
Accrual loans and leases	184,490	167,868
Accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	423
Current	33,255	33,917
Accrual loans and leases	33,255	34,340
Accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	757	1,073
Current	449,628	444,144
Accrual loans and leases	450,385	445,217
Accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	32,724	33,170
Accrual loans and leases	32,724	33,170
Accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	2	0
Current	8,375	8,438
Accrual loans and leases	8,377	8,438
Accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	23,066	20,499
Accrual loans and leases	23,066	20,499
Non-accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	20,773	20,522
Current	2,767	4,779
Non-accrual loans and leases	23,540	25,301
Non-accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	4,809	5,663
Current	357	0
Non-accrual loans and leases	5,166	5,663
Non-accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	31	31
Current	0	0
Non-accrual loans and leases	31	31
Non-accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	119	119
Current	2,031	2,094
Non-accrual loans and leases	2,150	2,213
Non-accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	0	0
Non-accrual loans and leases	0	0
Non-accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	0	0
Non-accrual loans and leases	0	0
Non-accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	0	0
Non-accrual loans and leases	0	0
Non-accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	15,549	14,430
Current	343	2,674
Non-accrual loans and leases	15,892	17,104
Non-accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	0	0
Non-accrual loans and leases	0	0
Non-accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	0	0
Non-accrual loans and leases	0	0
Non-accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	265	279
Current	36	11
Non-accrual loans and leases	301	290
30-59 days past due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,692	18,975
30-59 days past due | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	640
30-59 days past due | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	14,824
30-59 days past due | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	363
30-59 days past due | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,690	3,148
30-59 days past due | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	2	0
30-59 days past due | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	759	16,170
30-59 days past due | Accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	157
30-59 days past due | Accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	14,824
30-59 days past due | Accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	363
30-59 days past due | Accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	757	826
30-59 days past due | Accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	2	0
30-59 days past due | Accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	933	2,805
30-59 days past due | Non-accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	483
30-59 days past due | Non-accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	933	2,322
30-59 days past due | Non-accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	3,035	2,579
60-89 days past due | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	2,272
60-89 days past due | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	60
60-89 days past due | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	3,035	247
60-89 days past due | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	2,579
60-89 days past due | Accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	2,272
60-89 days past due | Accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	60
60-89 days past due | Accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	247
60-89 days past due | Accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	3,035	0
60-89 days past due | Non-accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	3,035	0
60-89 days past due | Non-accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	16,805	17,717
Greater than 90 days past due | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	4,809	5,180
Greater than 90 days past due | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	31	31
Greater than 90 days past due | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	119	119
Greater than 90 days past due | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	11,581	12,108
Greater than 90 days past due | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	265	279
Greater than 90 days past due | Accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Non-accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	16,805	17,717
Greater than 90 days past due | Non-accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	4,809	5,180
Greater than 90 days past due | Non-accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	31	31
Greater than 90 days past due | Non-accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	119	119
Greater than 90 days past due | Non-accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Non-accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Non-accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Non-accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	11,581	12,108
Greater than 90 days past due | Non-accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Non-accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Non-accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	$ 265	$ 279

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- Definition

Financing Receivable, Recorded Investment, 30 to 59 Days Past Due, Percent of Portfolio

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- Definition

Financing receivables that are current.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524

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Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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Recorded Investment in financing receivables that are past due at the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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