Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
ASSETS
Cash and due from banks	$ 193,188	$ 223,532
Interest bearing deposits	503,369	315,053
Temporary investments	534	5,202
Total cash and cash equivalents	697,091	543,787
Investment securities
Trading, at fair value	4,012	3,747
Available for sale, at fair value	1,910,082	2,625,229
Held to maturity, at amortized cost	5,766	4,541
Loans held for sale, at fair value	113,993	320,132
Non-covered loans and leases	7,228,904	6,681,080
Allowance for non-covered loan and lease losses	(84,694)	(85,391)
Net non-covered loans and leases	7,144,210	6,595,689
Covered loans, net of allowance of $11,918 and $18,275	397,083	477,078
Restricted equity securities	31,444	33,443
Premises and equipment, net	173,876	162,667
Goodwill and other intangible assets, net	778,094	685,331
Mortgage servicing rights, at fair value	41,853	27,428
Non-covered other real estate owned	18,249	17,138
Covered other real estate owned	2,980	10,374
FDIC indemnification asset	29,427	52,798
Other assets	221,137	236,061
Total assets	11,569,297	11,795,443
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest bearing	2,421,008	2,278,914
Interest bearing	6,646,232	7,100,361
Total deposits	9,067,240	9,379,275
Securities sold under agreements to repurchase	215,310	137,075
Term debt	252,017	253,605
Junior subordinated debentures, at fair value	86,718	85,081
Junior subordinated debentures, at amortized cost	101,979	110,985
Other liabilities	120,038	105,383
Total liabilities	9,843,302	10,071,404
COMMITMENTS AND CONTINGENCIES (NOTE 10)
SHAREHOLDERS' EQUITY
Common stock, no par value, 200,000,000 shares authorized; issued and outstanding: 111,928,762 in 2013 and 111,889,959 in 2012	1,513,225	1,512,400
Retained earnings	209,597	187,293
Accumulated other comprehensive income	3,173	24,346
Total shareholders' equity	1,725,995	1,724,039
Total liabilities and shareholders' equity	$ 11,569,297	$ 11,795,443