Loans and Leases (Impaired Loans) (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Impaired Loans Information:
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	$ 19,873		$ 17,932
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	25,177		23,182
Impaired Financing Receivable, with Related Allowance, Recorded Investment	45,664		46,815
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	58,325		59,073
Related Allowance for Loan Losses	5,746		5,948
Recorded Investment	65,537		64,747
Unpaid Principal Balance	83,502		82,255
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	18,904	24,973
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	190	163
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	46,241	47,384
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	427	384
Average Recorded Investment	65,145	72,357
Interest Income Recognized	617	547
Commercial
Impaired Loans Information:
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	19,873		17,932
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	25,177		23,182
Impaired Financing Receivable, with Related Allowance, Recorded Investment	6,211		7,184
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	12,811		13,784
Related Allowance for Loan Losses	2,212		2,387
Recorded Investment	26,084		25,116
Unpaid Principal Balance	37,988		36,966
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	18,904	24,967
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	190	163
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	6,698	9,176
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	26	28
Average Recorded Investment	25,602	34,143
Interest Income Recognized	216	191
Commercial and Industrial
Impaired Loans Information:
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	11,798		9,763
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	17,102		15,013
Impaired Financing Receivable, with Related Allowance, Recorded Investment	6,211		7,184
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	12,811		13,784
Related Allowance for Loan Losses	2,212		2,387
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	10,781	12,875
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	98	92
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	6,698	9,176
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	26	28
Commercial Mortgage
Impaired Loans Information:
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	6,407		6,480
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	6,407		6,480
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	6,444	11,036
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	65	55
Construction
Impaired Loans Information:
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,668		1,689
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,668		1,689
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,679	1,056
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	27	16
Consumer
Impaired Loans Information:
Impaired Financing Receivable, with Related Allowance, Recorded Investment	39,453		39,631
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	45,514		45,289
Related Allowance for Loan Losses	3,534		3,561
Recorded Investment	39,453		39,631
Unpaid Principal Balance	45,514		45,289
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0	6
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	39,543	38,208
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	401	356
Average Recorded Investment	39,543	38,214
Interest Income Recognized	401	356
Residential Mortgage
Impaired Loans Information:
Impaired Financing Receivable, with Related Allowance, Recorded Investment	31,725		32,331
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	37,786		37,989
Related Allowance for Loan Losses	3,408		3,445
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	32,028	31,841
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	267	236
Home Equity
Impaired Loans Information:
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,203		1,012
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,203		1,012
Related Allowance for Loan Losses	18		16
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,108	876
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	8	5
Automobile
Impaired Loans Information:
Impaired Financing Receivable, with Related Allowance, Recorded Investment	5,546		5,375
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	5,546		5,375
Related Allowance for Loan Losses	76		66
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	5,461	5,124
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	104	107
Other
Impaired Loans Information:
Impaired Financing Receivable, with Related Allowance, Recorded Investment	979		913
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	979		913
Related Allowance for Loan Losses	32		34
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0	6
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	946	367
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	$ 22	$ 8

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

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-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5258-111524

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

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-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524

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