Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Assets
Cash and due from banks	$ 194,171	$ 94,941
Interest-bearing deposits in banks	379,125	242,837
Total cash and cash equivalents	573,296	337,778
Fed funds sold		9,038
Securities available for sale, at fair value	1,805,205	1,729,794
Securities held to maturity, fair values of $199,110 and $291,994, respectively	192,764	290,020
Mortgage loans held for sale	153,013	83,905
Loans covered by loss share agreement	1,334,449	1,582,747
Non-covered loans, net of unearned income	6,053,588	4,452,585
Total loans, net of unearned income	7,388,037	6,035,332
Allowance for loan losses	(193,761)	(136,100)
Loans, net	7,194,276	5,899,232
FDIC loss share receivable	591,844	726,871
Premises and equipment, net	285,607	208,403
Goodwill	369,811	234,228
Other assets	592,112	507,497
Total Assets	11,757,928	10,026,766
Liabilities
Noninterest-bearing	1,485,058	878,768
Interest-bearing	7,803,955	7,036,338
Total deposits	9,289,013	7,915,106
Short-term borrowings	395,543	220,328
Long-term debt	452,733	432,251
Other liabilities	137,978	155,624
Total Liabilities	10,275,267	8,723,309
Shareholders' Equity
Common stock, $1 par value - 50,000,000 shares authorized; 31,163,070 and 28,079,841 shares issued, respectively	31,163	28,080
Additional paid-in capital	1,135,880	956,864
Retained earnings	375,184	361,055
Accumulated other comprehensive income	24,457	14,680
Treasury stock at cost - 1,789,165 and 1,205,228 shares, respectively	(84,023)	(57,222)
Total Shareholders' Equity	1,482,661	1,303,457
Total Liabilities and Shareholders' Equity	$ 11,757,928	$ 10,026,766