LOANS AND LEASES (Gross Loans And Leases By Segment And Class) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 10,254,013	$ 9,749,540	$ 9,546,250
Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,715,293	1,753,041	1,721,208
Consumer Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,447,132	2,257,726	2,191,265
Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	573,566	531,374	518,263
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	252,381	239,616	242,023
Commercial And Industrial - Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,605,811	1,522,536	1,508,679
Construction, Acquisition And Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	900,875	853,623	819,636
Credit Cards [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	109,576	113,426	109,464
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,141,398	1,961,977	1,916,577
All Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 507,981	$ 516,221	$ 519,135