Loans Receivable (Schedule Of Non-Covered Loans Outstanding) (Details) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Total loans, net of unearned income	$ 5,737,969,000	$ 4,452,585,000
Non-Covered Loan [Member] | Residential Mortgage Loans [Member]
Total loans, net of unearned income	329,716,000	369,986,000
Non-Covered Loan [Member] | Residential Mortgage Loans [Member] | Residential 1-4 Family [Member]
Total loans, net of unearned income	312,022,000	355,164,000
Non-Covered Loan [Member] | Residential Mortgage Loans [Member] | Construction/ Owner Occupied [Member]
Total loans, net of unearned income	17,694,000	14,822,000
Non-Covered Loan [Member] | Commercial Loans [Member]
Total loans, net of unearned income	4,197,325,000	3,123,096,000
Non-Covered Loan [Member] | Commercial Loans [Member] | Real Estate [Member]
Total loans, net of unearned income	2,593,066,000	1,781,744,000
Non-Covered Loan [Member] | Commercial Loans [Member] | Business [Member]
Total loans, net of unearned income	1,604,259,000	1,341,352,000
Non-Covered Loan [Member] | Consumer Loans [Member]
Total loans, net of unearned income	1,210,928,000	959,503,000
Non-Covered Loan [Member] | Consumer Loans [Member] | Indirect automobile [Member]
Total loans, net of unearned income	247,103,000	255,322,000
Non-Covered Loan [Member] | Consumer Loans [Member] | Home equity [Member]
Total loans, net of unearned income	742,560,000	555,749,000
Non-Covered Loan [Member] | Consumer Loans [Member] | Other Consumer [Member]
Total loans, net of unearned income	221,265,000	148,432,000
Consumer Loans [Member] | Indirect automobile [Member]
Total loans, net of unearned income	247,103,000	255,322,000
Consumer Loans [Member] | Home equity [Member]
Total loans, net of unearned income	742,560,000	555,749,000
Consumer Loans [Member] | Other Consumer [Member]
Total loans, net of unearned income	176,827,000	105,516,000
Non-Covered Loan [Member]
Total loans, net of unearned income	$ 5,737,969,000	$ 4,452,585,000