Loans and Leases (Recorded Investment, By Class, In Loans And Leases On Nonaccrual Status And Loans And Leases Greater Than 90 Days Past Due And Still Accruing) (Details) (Noncovered Loans, USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	$ 75,255	$ 52,741	$ 59,603
Loans and leases greater than 90 days and accruing	14,071	14,840	17,887
Commercial Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	44,784	23,748	25,993
Loans and leases greater than 90 days and accruing	3,601	3,107	2,390
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	9,480	1,864	1,792
Loans and leases greater than 90 days and accruing	361	320	380
Lease Financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	627	200	83
Loans and leases greater than 90 days and accruing	0	554	17
Other Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	298	1,170	1,217
Loans and leases greater than 90 days and accruing	951	0	0
Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	11,350	10,657	11,949
Loans and leases greater than 90 days and accruing	3,701	4,227	6,604
Revolving Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	0	0	0
Loans and leases greater than 90 days and accruing	3,760	4,306	6,066
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	45	0	0
Loans and leases greater than 90 days and accruing	1,091	1,441	1,498
Commercial Mortgage | Construction and Land Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	7,930	15,102	18,569
Loans and leases greater than 90 days and accruing	268	313	418
Non-Commercial Loans | Construction and Land Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	741	0	0
Loans and leases greater than 90 days and accruing	$ 338	$ 572	$ 514