Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Assets
Cash and due from banks (noninterest-bearing)	$ 209,188	$ 202,625
Federal funds sold and securities purchased under reverse repurchase agreements	5,295	9,258
Securities available for sale (at fair value)	2,724,446	2,468,993
Securities held to maturity (fair value: $50,272-2012; $62,515-2011)	45,484	57,705
Loans held for sale (LHFS)	324,897	216,553
Loans held for investment (LHFI)	5,527,963	5,857,484
Less allowance for loan losses, LHFI	83,526	89,518
Net LHFI	5,444,437	5,767,966
Acquired loans:
Noncovered loans	83,110	0
Covered loans	64,503	76,804
Less allowance for loan losses, acquired loans	4,343	502
Net acquired loans	143,270	76,302
Net LHFI and acquired loans	5,587,707	5,844,268
Premises and equipment, net	155,467	142,582
Mortgage servicing rights	44,211	43,274
Goodwill	291,104	291,104
Identifiable intangible assets	18,327	14,076
Other real estate, excluding covered other real estate	82,475	79,053
Covered other real estate	5,722	6,331
FDIC indemnification assets	23,979	28,348
Other assets	353,857	322,837
Total Assets	9,872,159	9,727,007
Deposits:
Noninterest-bearing	2,118,853	2,033,442
Interest-bearing	5,685,188	5,532,921
Total deposits	7,804,041	7,566,363
Federal funds purchased and securities sold under repurchase agreements	408,711	604,500
Short-term borrowings	83,612	87,628
Subordinated notes	49,863	49,839
Junior subordinated debt securities	61,856	61,856
Other liabilities	186,061	141,784
Total Liabilities	8,594,144	8,511,970
Shareholders' Equity
Common stock, no par value: Authorized: 250,000,000 shares Issued and outstanding: 64,779,937 shares - 2012; 64,142,498 shares - 2011	13,496	13,364
Capital surplus	284,089	266,026
Retained earnings	973,182	932,526
Accumulated other comprehensive income, net of tax	7,248	3,121
Total Shareholders' Equity	1,278,015	1,215,037
Total Liabilities and Shareholders' Equity	$ 9,872,159	$ 9,727,007