Loans and Leases, Net (Commercial, Commercial Real Estate Loans And Equipment Financing Loans Segregated By Risk Rating Exposure) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	$ 272,372	$ 295,479
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	2,392,075	2,203,864
Equipment Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	474,804	710,925
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	2,392,376	2,109,469
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	46,524	5,167
Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	2,036,738	1,670,901
Pass [Member] | Equipment Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	407,943	631,189
Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	2,148,970	1,713,109
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	4,622	8,347
Special Mention [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	58,238	71,919
Special Mention [Member] | Equipment Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	15,416	30,745
Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	32,578	59,162
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	220,899	280,834
Substandard [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	296,478	460,209
Substandard [Member] | Equipment Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	51,445	48,991
Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	208,555	329,017
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	327	1,131
Doubtful [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	621	835
Doubtful [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk exposure	$ 2,273	$ 8,181