Loans and Leases and Allowance For Credit Losses (TDR 1) (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	21		66
Post-Modification Outstanding Balance	$ 12,390	[1]	$ 34,606	[1]
Net change in ALLL resulting from modification	(1,154)		(2,239)
Commercial and industrial owner occupied [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	3		27
Post-Modification Outstanding Balance	638	[1]	12,240	[1]
Net change in ALLL resulting from modification	(68)		(749)
Commercial and industrial owner occupied [Member] | Amortization Or Maturity Date Change [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	16		35
Post-Modification Outstanding Balance	11,023	[1]	19,294	[1]
Net change in ALLL resulting from modification	(1,085)		(1,733)
Commercial and industrial owner occupied [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2		4
Post-Modification Outstanding Balance	729	[1]	3,072	[1]
Net change in ALLL resulting from modification	(1)		243
Other commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	19		76
Post-Modification Outstanding Balance	23,494	[1]	69,948	[1]
Net change in ALLL resulting from modification	1,302		(4,604)
Other commercial and industrial [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	6		18
Post-Modification Outstanding Balance	18,292	[1]	21,382	[1]
Net change in ALLL resulting from modification	1,225		1,067
Other commercial and industrial [Member] | Amortization Or Maturity Date Change [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	11		41
Post-Modification Outstanding Balance	2,175	[1]	23,145	[1]
Net change in ALLL resulting from modification	13		(2,651)
Other commercial and industrial [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2		17
Post-Modification Outstanding Balance	3,027	[1]	25,421	[1]
Net change in ALLL resulting from modification	64		(3,020)
Commercial real estate retail properties [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	10		28
Post-Modification Outstanding Balance	40,462	[1]	86,476	[1]
Net change in ALLL resulting from modification	6,620		4,243
Commercial real estate retail properties [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2		8
Post-Modification Outstanding Balance	19,883	[1]	46,534	[1]
Net change in ALLL resulting from modification	5,603		4,359
Commercial real estate retail properties [Member] | Amortization Or Maturity Date Change [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	7		14
Post-Modification Outstanding Balance	17,984	[1]	25,689	[1]
Net change in ALLL resulting from modification	1,012		1,858
Commercial real estate retail properties [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	1		6
Post-Modification Outstanding Balance	2,595	[1]	14,253	[1]
Net change in ALLL resulting from modification	5		(1,974)
Commercial real estate Multi family [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	5		15
Post-Modification Outstanding Balance	2,341	[1]	6,634	[1]
Net change in ALLL resulting from modification	52		16
Commercial real estate Multi family [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	4		10
Post-Modification Outstanding Balance	1,275	[1]	4,378	[1]
Net change in ALLL resulting from modification	103		(9)
Commercial real estate Multi family [Member] | Amortization Or Maturity Date Change [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	1		5
Post-Modification Outstanding Balance	1,066	[1]	2,256	[1]
Net change in ALLL resulting from modification	(51)		25
Commercial real estate Multi family [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0		0
Post-Modification Outstanding Balance	0	[1]	0	[1]
Net change in ALLL resulting from modification	0		0
Commercial real estate office [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0		5
Post-Modification Outstanding Balance	0	[1]	2,743	[1]
Net change in ALLL resulting from modification	0		356
Commercial real estate office [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0		3
Post-Modification Outstanding Balance	0	[1]	1,505	[1]
Net change in ALLL resulting from modification	0		259
Commercial real estate office [Member] | Amortization Or Maturity Date Change [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0		2
Post-Modification Outstanding Balance	0	[1]	1,238	[1]
Net change in ALLL resulting from modification	0		97
Commercial real estate office [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0		0
Post-Modification Outstanding Balance	0	[1]	0	[1]
Net change in ALLL resulting from modification	0		0
Commercial real estate Industrial and warehouse [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	3		8
Post-Modification Outstanding Balance	2,376	[1]	23,612	[1]
Net change in ALLL resulting from modification	(147)		(5,890)
Commercial real estate Industrial and warehouse [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0		1
Post-Modification Outstanding Balance	0	[1]	2,165	[1]
Net change in ALLL resulting from modification	0		(299)
Commercial real estate Industrial and warehouse [Member] | Amortization Or Maturity Date Change [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2		6
Post-Modification Outstanding Balance	229	[1]	19,300	[1]
Net change in ALLL resulting from modification	(2)		(5,446)
Commercial real estate Industrial and warehouse [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	1		1
Post-Modification Outstanding Balance	2,147	[1]	2,147	[1]
Net change in ALLL resulting from modification	(145)		(145)
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	171		525
Post-Modification Outstanding Balance	22,901	[1]	77,510	[1]
Net change in ALLL resulting from modification	682		1,815
Residential Mortgage [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2		8
Post-Modification Outstanding Balance	181	[1]	6,604	[1]
Net change in ALLL resulting from modification	0		(589)
Residential Mortgage [Member] | Amortization Or Maturity Date Change [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	164		499
Post-Modification Outstanding Balance	22,120	[1]	67,351	[1]
Net change in ALLL resulting from modification	649		2,289
Residential Mortgage [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	5		18
Post-Modification Outstanding Balance	600	[1]	3,555	[1]
Net change in ALLL resulting from modification	33		115
Automobile Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	834		1,548
Post-Modification Outstanding Balance	7,834	[1]	14,018	[1]
Net change in ALLL resulting from modification	(65)		(110)
Automobile Loan [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	12		14
Post-Modification Outstanding Balance	147	[1]	186	[1]
Net change in ALLL resulting from modification	3		3
Automobile Loan [Member] | Amortization Or Maturity Date Change [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	822		1,534
Post-Modification Outstanding Balance	7,687	[1]	13,832	[1]
Net change in ALLL resulting from modification	(68)		(113)
Automobile Loan [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0		0
Post-Modification Outstanding Balance	0	[1]	0	[1]
Net change in ALLL resulting from modification	0		0
Home equity secured by first-lien other [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	97		170
Post-Modification Outstanding Balance	11,677	[1]	20,909	[1]
Net change in ALLL resulting from modification	1,127		2,486
Home equity secured by first-lien other [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	48		95
Post-Modification Outstanding Balance	5,857	[1]	11,836	[1]
Net change in ALLL resulting from modification	1,016		1,899
Home equity secured by first-lien other [Member] | Amortization Or Maturity Date Change [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	49		75
Post-Modification Outstanding Balance	5,820	[1]	9,073	[1]
Net change in ALLL resulting from modification	111		587
Home equity secured by first-lien other [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0		0
Post-Modification Outstanding Balance	0	[1]	0	[1]
Net change in ALLL resulting from modification	0		0
Home equity Secured by second-lien [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	99		198
Post-Modification Outstanding Balance	4,623	[1]	8,455	[1]
Net change in ALLL resulting from modification	62		346
Home equity Secured by second-lien [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	55		109
Post-Modification Outstanding Balance	2,992	[1]	5,480	[1]
Net change in ALLL resulting from modification	22		287
Home equity Secured by second-lien [Member] | Amortization Or Maturity Date Change [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	44		89
Post-Modification Outstanding Balance	1,631	[1]	2,975	[1]
Net change in ALLL resulting from modification	40		59
Home equity Secured by second-lien [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0		0
Post-Modification Outstanding Balance	0	[1]	0	[1]
Net change in ALLL resulting from modification	0		0
Other Consumer loan [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	56		68
Post-Modification Outstanding Balance	909	[1]	1,200	[1]
Net change in ALLL resulting from modification	30		54
Other Consumer loan [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	6		11
Post-Modification Outstanding Balance	561	[1]	837	[1]
Net change in ALLL resulting from modification	48		73
Other Consumer loan [Member] | Amortization Or Maturity Date Change [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	50		57
Post-Modification Outstanding Balance	348	[1]	363	[1]
Net change in ALLL resulting from modification	(18)		(19)
Other Consumer loan [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	0		0
Post-Modification Outstanding Balance	0	[1]	0	[1]
Net change in ALLL resulting from modification	0		0
Other commercial real estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	24		68
Post-Modification Outstanding Balance	41,796	[1]	129,212	[1]
Net change in ALLL resulting from modification	(739)		(4,750)
Other commercial real estate [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	10		15
Post-Modification Outstanding Balance	7,834	[1]	17,893	[1]
Net change in ALLL resulting from modification	(374)		(1,180)
Other commercial real estate [Member] | Amortization Or Maturity Date Change [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	12		48
Post-Modification Outstanding Balance	31,470	[1]	103,120	[1]
Net change in ALLL resulting from modification	(365)		(3,602)
Other commercial real estate [Member] | Other Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts, actual	2		5
Post-Modification Outstanding Balance	2,492	[1]	8,199	[1]
Net change in ALLL resulting from modification	$ 0		$ 32

[1] Post-modification balances approximate pre-modification balances. The aggregate amount of charge-offs as a result of a restructuring are not significant.