Loans and Leases and Allowance For Credit Losses (TDR 2) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2011 contracts	Sep. 30, 2011 contracts
Commercial and industrial owner occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	3	18
Ending Balance	$ 3,224	$ 10,274
Commercial and industrial owner occupied [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	9
Ending Balance	0	3,850
Commercial and industrial owner occupied [Member] | Maturity Date Extension [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	3	7
Ending Balance	3,224	4,072
Commercial and industrial owner occupied [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	2
Ending Balance	0	2,352
Other commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2	7
Ending Balance	9,300	10,125
Other commercial and industrial [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	1
Ending Balance	0	193
Other commercial and industrial [Member] | Maturity Date Extension [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2	6
Ending Balance	9,300	9,932
Other commercial and industrial [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Commercial real estate retail properties [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	1
Ending Balance	0	796
Commercial real estate retail properties [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Commercial real estate retail properties [Member] | Maturity Date Extension [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	1
Ending Balance	0	796
Commercial real estate retail properties [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Commercial real estate Multi family [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2	6
Ending Balance	812	1,645
Commercial real estate Multi family [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2	4
Ending Balance	812	1,180
Commercial real estate Multi family [Member] | Maturity Date Extension [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	2
Ending Balance	0	465
Commercial real estate Multi family [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Commercial real estate office [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	2
Ending Balance	0	450
Commercial real estate office [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	1
Ending Balance	0	116
Commercial real estate office [Member] | Maturity Date Extension [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	1
Ending Balance	0	334
Commercial real estate office [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Commercial real estate Industrial and warehouse [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2	7
Ending Balance	229	2,581
Commercial real estate Industrial and warehouse [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Commercial real estate Industrial and warehouse [Member] | Maturity Date Extension [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2	7
Ending Balance	229	2,581
Commercial real estate Industrial and warehouse [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	24	58
Ending Balance	2,490	6,522
Residential Mortgage [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	1	2
Ending Balance	65	221
Residential Mortgage [Member] | Maturity Date Extension [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	22	51
Ending Balance	2,276	5,544
Residential Mortgage [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	1	5
Ending Balance	149	757
Automobile Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	41	113
Ending Balance	0	0
Automobile Loan [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	1
Ending Balance	0	0
Automobile Loan [Member] | Maturity Date Extension [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	41	112
Ending Balance	0	0
Automobile Loan [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Home equity secured by first-lien other [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	3
Ending Balance	0	121
Home equity secured by first-lien other [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Home equity secured by first-lien other [Member] | Maturity Date Extension [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	3
Ending Balance	0	121
Home equity secured by first-lien other [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Home equity Secured by second-lien [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	7
Ending Balance	0	402
Home equity Secured by second-lien [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	2
Ending Balance	0	153
Home equity Secured by second-lien [Member] | Maturity Date Extension [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	5
Ending Balance	0	249
Home equity Secured by second-lien [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Other Consumer loan [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	2
Ending Balance	0	11
Other Consumer loan [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Other Consumer loan [Member] | Maturity Date Extension [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	2
Ending Balance	0	11
Other Consumer loan [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	0	0
Other commercial real estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2	17
Ending Balance	132	4,251
Other commercial real estate [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2	7
Ending Balance	132	2,214
Other commercial real estate [Member] | Maturity Date Extension [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	10
Ending Balance	0	2,037
Other commercial real estate [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0	0
Ending Balance	$ 0	$ 0