Loans (Summary Of Loan Portfolio) (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Loans, net of unearned income	$ 6,702,595	$ 6,088,155
Commercial [Member]
Loans, net of unearned income	3,776,287	3,337,992
Direct Installment [Member]
Loans, net of unearned income	1,039,270	1,002,725
Residential Mortgages [Member]
Loans, net of unearned income	676,574	622,242
Indirect Installment [Member]
Loans, net of unearned income	535,191	514,369
Consumer Lines Of Credit [Member]
Loans, net of unearned income	542,470	493,881
Commercial Leases [Member]
Loans, net of unearned income	93,273	79,429
Other [Member]
Loans, net of unearned income	$ 39,530	$ 37,517