Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
ASSETS
Cash and due from banks	$ 159,290	$ 152,265
Interest bearing deposits	336,780	445,954
Temporary investments	536	547
Total cash and cash equivalents	496,606	598,766
Investment securities
Trading, at fair value	3,053	2,309
Available for sale, at fair value	2,899,361	3,168,578
Held to maturity, at amortized cost	5,359	4,714
Loans held for sale	225,882	98,691
Non-covered loans and leases	6,248,425	5,888,098
Allowance for non-covered loan and lease losses	(84,759)	(92,968)
Net non-covered loans and leases	6,163,666	5,795,130
Covered loans and leases, net of allowance of $15,532 and $14,320	515,045	622,451
Restricted equity securities	31,365	32,581
Premises and equipment, net	154,288	152,366
Goodwill and other intangible assets, net	673,604	677,224
Mortgage servicing rights, at fair value	24,489	18,184
Non-covered other real estate owned	19,264	34,175
Covered other real estate owned	8,111	19,491
FDIC indemnification asset	60,506	91,089
Other assets	248,365	247,606
Total assets	11,528,964	11,563,355
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest bearing	2,113,842	1,913,121
Interest bearing	6,986,087	7,323,569
Total deposits	9,099,929	9,236,690
Securities sold under agreements to repurchase	161,051	124,605
Term debt	254,123	255,676
Junior subordinated debentures, at fair value	84,538	82,905
Junior subordinated debentures, at amortized cost	102,302	102,544
Other liabilities	112,928	88,522
Total liabilities	9,814,871	9,890,942
COMMITMENTS AND CONTINGENCIES (NOTE 10)
SHAREHOLDERS' EQUITY
Common stock, no par value, 200,000,000 shares authorized; issued and outstanding: 111,915,015 in 2012 and 112,164,891 in 2011	1,512,744	1,514,913
Retained earnings	169,480	123,726
Accumulated other comprehensive income	31,869	33,774
Total shareholders' equity	1,714,093	1,672,413
Total liabilities and shareholders' equity	$ 11,528,964	$ 11,563,355