Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets
Cash and due from banks	$ 208,961	$ 223,814
Interest bearing deposits with other banks	319,462	979,800
Available-for-sale securities, at fair value (amortized cost of $2,460,608 and $2,365,962, respectively)	2,466,989	2,434,032
Loans and leases	8,993,888	8,672,752
Less: Unearned income	35,873	35,763
Allowance for credit losses	153,236	164,466
Net loans and leases	8,804,779	8,472,523
Loans held for sale	69,593	129,138
Premises and equipment, net	315,260	319,456
Accrued interest receivable	42,150	44,356
Goodwill	286,800	275,173
Other identifiable intangibles	26,079	17,329
Bank-owned life insurance	239,434	231,120
Other real estate owned	69,338	103,248
Other assets	180,888	167,209
Total Assets	13,029,733	13,397,198
Demand:
Noninterest bearing	2,644,592	2,545,169
Interest bearing	4,582,450	4,799,496
Savings	1,234,130	1,145,785
Other time	2,312,664	2,597,696
Total deposits	10,773,836	11,088,146
Federal funds purchased and securities sold under agreement to repurchase	421,028	414,611
Accrued interest payable	4,836	6,140
Junior subordinated debt securities	31,446	160,312
Long-term debt	81,714	33,500
Other liabilities	203,743	245,437
Total Liabilities	11,516,603	11,948,146
Shareholders' Equity
Common stock, $2.50 par value, Authorized - 500,000,000 shares; Issued - 95,231,691 and 94,549,867 shares, respectively	238,079	236,375
Capital surplus	312,900	311,909
Accumulated other comprehensive loss	(29,959)	(8,646)
Retained earnings	992,110	909,414
TOTAL SHAREHOLDERS' EQUITY	1,513,130	1,449,052
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 13,029,733	$ 13,397,198