FAIR VALUE DISCLOSURES (Carrying And Fair Value Information) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014		Jun. 30, 2014
Assets [Abstract]
Available-for-sale securities	$ 2,251,153	$ 2,156,927	[1]	$ 2,332,192
Carrying Value [Member]
Assets [Abstract]
Cash and due from banks	183,541	204,231
Interest bearing deposits with other banks	34,438	153,019
Available-for-sale securities	2,251,153	2,156,927
Net loans and leases	9,869,259	9,570,493
Loans held for sale	199,370	141,015
Liabilities [Abstract]
Noninterest bearing deposits	2,911,972	2,778,686
Savings and interest bearing deposits	6,289,085	6,200,017
Other time deposits	1,933,904	1,993,636
Federal funds purchased and securities sold under agreement to repurchase and other short-term borrowings	468,480	391,666
Long-term debt and other borrowings	97,177	101,372
Derivative instruments [Abstract]
Forward commitments to sell fixed rate mortgage loans	2,204	(1,163)
Commitments to fund fixed rate mortgage loans	4,505	2,137
Interest rate swap position to receive	18,294	21,653
Interest rate swap position to pay	(18,565)	(22,004)
Fair Value [Member]
Assets [Abstract]
Cash and due from banks	183,541	204,231
Interest bearing deposits with other banks	34,438	153,019
Available-for-sale securities	2,251,153	2,156,927
Net loans and leases	9,967,969	10,066,945
Loans held for sale	199,370	141,015
Liabilities [Abstract]
Noninterest bearing deposits	2,911,972	2,778,686
Savings and interest bearing deposits	6,289,085	6,200,017
Other time deposits	1,946,877	2,005,023
Federal funds purchased and securities sold under agreement to repurchase and other short-term borrowings	468,503	391,743
Long-term debt and other borrowings	100,961	106,218
Derivative instruments [Abstract]
Forward commitments to sell fixed rate mortgage loans	2,204	(1,163)
Commitments to fund fixed rate mortgage loans	4,505	2,137
Interest rate swap position to receive	18,294	21,653
Interest rate swap position to pay	$ (18,565)	$ (22,004)

[1] Derived from audited financial statements.See accompanying notes to consolidated financial statements.