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	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Nonaccrual loans and leases	$ 69,406	$ 52,741	$ 73,441
Loans and leases greater than 90 days and accruing	12,907	14,840	15,208
Commercial Mortgage
Nonaccrual loans and leases	38,044	23,748	30,960
Loans and leases greater than 90 days and accruing	3,279	3,107	2,757
Commercial and Industrial
Nonaccrual loans and leases	9,166	1,864	2,408
Loans and leases greater than 90 days and accruing	323	320	588
Lease Financing
Nonaccrual loans and leases	651	200	605
Loans and leases greater than 90 days and accruing	13	554	28
Other Commercial Real Estate
Nonaccrual loans and leases	578	1,170	847
Loans and leases greater than 90 days and accruing	186	0	1
Residential Mortgage
Nonaccrual loans and leases	11,232	10,657	13,897
Loans and leases greater than 90 days and accruing	2,807	4,227	2,462
Revolving Mortgage
Nonaccrual loans and leases	0	0	0
Loans and leases greater than 90 days and accruing	4,182	4,306	7,282
Consumer
Nonaccrual loans and leases	392	0	0
Loans and leases greater than 90 days and accruing	1,133	1,441	1,493
Commercial Mortgage | Construction and Land Development
Nonaccrual loans and leases	8,602	15,102	24,675
Loans and leases greater than 90 days and accruing	449	313	78
Non-Commercial Loans | Construction and Land Development
Nonaccrual loans and leases	741	0	49
Loans and leases greater than 90 days and accruing	$ 535	$ 572	$ 519