Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
ASSETS
Cash and due from banks	$ 414,623	$ 437,947
Interest-bearing bank deposits	318,632	1,184,222
Federal funds sold	1,425	197
Securities available for sale, at fair value (amortized cost of $2,128,013 and $4,401,345)	2,208,789	4,496,900
Securities held to maturity (fair value of $1,889,136)	1,844,482
Loans held for sale	51,097	72,378
Loans	11,451,820	11,191,901
Less: allowance for loan losses	(135,591)	(124,881)
unearned income	(17,372)	(14,875)
Loans, net	11,298,857	11,052,145
Property and equipment, net of accumulated depreciation of $155,777 and $148,780	483,713	505,387
Prepaid expenses	60,161	69,064
Other real estate, net	130,046	144,367
Accrued interest receivable	47,607	53,973
Goodwill	628,877	651,162
Other intangible assets, net	197,139	211,075
Life insurance contracts	367,269	355,026
FDIC loss share indemnification asset	184,445	212,885
Deferred tax asset, net	124,075	145,760
Other assets	162,893	181,608
Total assets	18,524,130	19,774,096
Deposits:
Non-interest bearing demand	5,151,146	5,516,336
Interest-bearing savings, NOW, money market and time	9,621,805	10,197,243
Total deposits	14,772,951	15,713,579
Short-term borrowings	748,634	1,044,454
Long-term debt	308,327	353,890
Accrued interest payable	6,526	8,284
Other liabilities	253,204	286,726
Total liabilities	16,089,642	17,406,933
Stockholders' equity
Common stock - $3.33 par value per share; 350,000,000 shares authorized, 84,781,894 and 84,705,496 issued and outstanding, respectively	282,323	282,069
Capital surplus	1,644,114	1,634,634
Retained earnings	519,838	476,970
Accumulated other comprehensive income (loss), net	(11,787)	(26,510)
Total stockholders' equity	2,434,488	2,367,163
Total liabilities and stockholders' equity	$ 18,524,130	$ 19,774,096