Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 35,755
Provision (credit)	769	$ 855
Ending Balance	36,166
Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	35,598	31,312
Charge-offs	(750)	(561)
Recoveries	465	358
Provision (credit)	602	872
Ending Balance	35,915	31,981
Originated Loans and Leases \| Commercial and industrial, total
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	9,389	10,495
Charge-offs	(75)	(115)
Recoveries	76	18
Provision (credit)	883	(1,107)
Ending Balance	10,273	9,291
Originated Loans and Leases \| Commercial real estate, total
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	19,836	15,479
Charge-offs	(21)	0
Recoveries	235	211
Provision (credit)	(936)	1,418
Ending Balance	19,114	17,108
Originated Loans and Leases \| Residential real estate, total
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,149	4,070
Charge-offs	(374)	(200)
Recoveries	27	17
Provision (credit)	584	388
Ending Balance	5,386	4,275
Originated Loans and Leases \| Consumer and other, total
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,224	1,268
Charge-offs	(280)	(246)
Recoveries	127	112
Provision (credit)	71	173
Ending Balance	1,142	1,307
Originated Loans and Leases \| Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	0
Charge-offs	0	0
Recoveries	0	0
Provision (credit)		0
Ending Balance	0	0
Total Acquired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	157	692
Charge-offs	(83)	(172)
Recoveries	10	46
Provision (credit)	167	(17)
Ending Balance	251	549
Total Acquired Loans \| Commercial and industrial, total
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	433
Charge-offs	(9)	(63)
Recoveries	0	0
Provision (credit)	9	63
Ending Balance	0	433
Total Acquired Loans \| Commercial real estate, total
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	97	61
Charge-offs	(74)	0
Recoveries	10	46
Provision (credit)	43	(74)
Ending Balance	76	33
Total Acquired Loans \| Residential real estate, total
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	54	198
Charge-offs	0	(16)
Recoveries	0	0
Provision (credit)	115	(123)
Ending Balance	169	59
Total Acquired Loans \| Consumer and other, total
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6	0
Charge-offs	0	(93)
Recoveries	0	0
Provision (credit)	0	117
Ending Balance	6	24
Total Acquired Loans \| Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	0
Charge-offs	0	0
Recoveries	0	0
Provision (credit)	0	0
Ending Balance	$ 0	$ 0

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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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.

+ References

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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 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef
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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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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 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
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-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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