Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Allowance for Loan and Lease Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Allowance for credit losses roll-forward
Allowance for loan and lease losses	$ 21,677	$ 18,154	$ 21,677	$ 18,154	$ 21,666	$ 20,912	$ 16,684	$ 16,316
Charge-offs	(3,757)	(1,350)	(3,966)	(1,594)
Recoveries	112	58	503	145
Net (charge-offs) recoveries	(3,645)	(1,292)	(3,463)	(1,449)
Provision for credit loss	3,656	2,762	4,228	3,287
Allowance for loan and lease losses	21,677	18,154	21,677	18,154
Commercial real estate:
Allowance for credit losses roll-forward
Allowance for loan and lease losses	12,003	11,436	12,003	11,436	12,817	12,384	11,480	11,220
Charge-offs	(51)	(894)	(118)	(935)
Recoveries	46	55	150	139
Net (charge-offs) recoveries	(5)	(839)	32	(796)
Provision for credit loss	(809)	795	(413)	1,012
Allowance for loan and lease losses	12,003	11,436	12,003	11,436
Commercial and industrial loans and leases
Allowance for credit losses roll-forward
Allowance for loan and lease losses	9,090	6,017	9,090	6,017	7,943	7,970	4,488	4,387
Charge-offs	(3,706)	(456)	(3,761)	(652)
Recoveries	66	2	312	2
Net (charge-offs) recoveries	(3,640)	(454)	(3,449)	(650)
Provision for credit loss	4,787	1,983	4,569	2,280
Allowance for loan and lease losses	9,090	6,017	9,090	6,017
Consumer and other:
Allowance for credit losses roll-forward
Allowance for loan and lease losses	584	701	584	701	$ 906	$ 558	$ 716	$ 709
Charge-offs	0	0	(87)	(7)
Recoveries	0	1	41	4
Net (charge-offs) recoveries	0	1	(46)	(3)
Provision for credit loss	(322)	(16)	72	(5)
Allowance for loan and lease losses	$ 584	$ 701	$ 584	$ 701

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

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

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Amount, after recoveries, of loans and leases that have been written-off.

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

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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-Publisher FASB
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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 225
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