Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
ASSETS
Cash and due from banks	$ 159,694	$ 152,265
Interest bearing deposits	503,552	445,954
Temporary investments	530	547
Total cash and cash equivalents	663,776	598,766
Investment securities
Trading, at fair value	3,301	2,309
Available for sale, at fair value	2,834,076	3,168,578
Held to maturity, at amortized cost	4,506	4,714
Loans held for sale	209,607	98,691
Non-covered loans and leases	6,104,432	5,888,098
Allowance for non-covered loan and lease losses	(83,618)	(92,968)
Net non-covered loans and leases	6,020,814	5,795,130
Covered loans and leases, net of allowance of $12,977 and $14,320	553,963	622,451
Restricted equity securities	31,712	32,581
Premises and equipment, net	154,956	152,366
Goodwill and other intangible assets, net	674,794	677,224
Mortgage servicing rights, at fair value	22,513	18,184
Non-covered other real estate owned	26,884	34,175
Covered other real estate owned	9,191	19,491
FDIC indemnification asset	68,805	91,089
Other assets	242,999	247,606
Total assets	11,521,897	11,563,355
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest bearing	2,021,303	1,913,121
Interest bearing	7,110,878	7,323,569
Total deposits	9,132,181	9,236,690
Securities sold under agreements to repurchase	149,341	124,605
Term debt	254,641	255,676
Junior subordinated debentures, at fair value	83,993	82,905
Junior subordinated debentures, at amortized cost	102,382	102,544
Other liabilities	102,523	88,522
Total liabilities	9,825,061	9,890,942
COMMITMENTS AND CONTINGENCIES (NOTE 9)
SHAREHOLDERS' EQUITY
Common stock, no par value, 200,000,000 shares authorized; issued and outstanding: 111,891,283 in 2012 and 112,164,891 in 2011	1,511,633	1,514,913
Retained earnings	154,474	123,726
Accumulated other comprehensive income	30,729	33,774
Total shareholders' equity	1,696,836	1,672,413
Total liabilities and shareholders' equity	$ 11,521,897	$ 11,563,355