Allowance for Loan and Lease Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 28,997
Provision (credit)	209us-gaap_ProvisionForLoanAndLeaseLosses	743us-gaap_ProvisionForLoanAndLeaseLosses
Ending Balance	29,485
Originated Loans and Leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	28,156	26,700
Charge-offs	(376)	(746)
Recoveries	570	196
Provision (credit)	340	511
Ending Balance	28,690	26,661
Originated Loans and Leases [Member] \| Commercial and industrial, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	9,157	8,406
Charge-offs	(2)	(121)
Recoveries	147	65
Provision (credit)	528	419
Ending Balance	9,830	8,769
Originated Loans and Leases [Member] \| Commercial real estate, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	12,069	10,459
Charge-offs	(14)	(180)
Recoveries	208	2
Provision (credit)	75	134
Ending Balance	12,338	10,415
Originated Loans and Leases [Member] \| Residential real estate, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,030	5,771
Charge-offs	(93)	(193)
Recoveries	47	12
Provision (credit)	(319)	(222)
Ending Balance	4,665	5,368
Originated Loans and Leases [Member] \| Consumer and other, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,900	2,059
Charge-offs	(267)	(252)
Recoveries	168	117
Provision (credit)	56	185
Ending Balance	1,857	2,109
Originated Loans and Leases [Member] \| Finance Leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		5
Provision (credit)		(5)
Acquired Loans and Leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	841	1,270
Charge-offs	(31)	(149)
Recoveries	116	0
Provision (credit)	(131)	232
Ending Balance	795	1,353
Acquired Loans and Leases [Member] \| Commercial and industrial, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	431	168
Charge-offs	(1)	(19)
Recoveries	7	0
Provision (credit)	126	149
Ending Balance	563	298
Acquired Loans and Leases [Member] \| Commercial real estate, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	337	770
Charge-offs	0	(25)
Recoveries	107	0
Provision (credit)	(278)	74
Ending Balance	166	819
Acquired Loans and Leases [Member] \| Residential real estate, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	51	274
Charge-offs	(30)	(99)
Recoveries	2	0
Provision (credit)	20	(105)
Ending Balance	43	70
Acquired Loans and Leases [Member] \| Consumer and other, total [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	22	58
Charge-offs	0	(6)
Recoveries	0	0
Provision (credit)	1	114
Ending Balance	$ 23	$ 166

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

+ References

+ Details

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(4)

-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(d))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

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-Section 50

-Paragraph 11B

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-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 4: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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-Paragraph 2

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-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section L

-Subsection 1

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.11)

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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-Name Accounting Standards Codification

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-Section 50

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-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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