Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 31,252,000	$ 11,977,000
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of investment premiums, net	16,389,000	7,196,000
Gain on sale of investment securities, net	(5,678,000)	(1,000)
Other-than-temporary impairment on investment securities held to maturity	72,000	289,000
Loss on sale of non-covered other real estate owned	1,160,000	1,156,000
Gain on sale of covered other real estate owned	(898,000)	(1,519,000)
Valuation adjustment on non-covered other real estate owned	5,518,000	1,721,000
Valuation adjustment on covered other real estate owned	1,921,000	5,000
PROVISION FOR NON-COVERED LOAN AND LEASE LOSSES	30,489,000	71,873,000
Provision for covered loan and lease losses	11,023,000
Bargain purchase gain on acquisition		(6,437,000)
Change in FDIC indemnification asset	2,646,000	(873,000)
Depreciation, amortization and accretion	6,218,000	7,186,000
Increase in mortgage servicing rights	(2,407,000)	(2,008,000)
Change in mortgage servicing rights carried at fair value	511,000	1,800,000
Change in junior subordinated debentures carried at fair value	1,078,000	(6,076,000)
Stock-based compensation	1,987,000	1,425,000
Net decrease in trading account assets	502,000	530,000
Gain on sale of loans	(1,819,000)	(3,441,000)
Origination of loans held for sale	(290,058,000)	(248,744,000)
Proceeds from sales of loans held for sale	307,087,000	245,788,000
Excess tax benefits from the exercise of stock options	(4,000)	(56,000)
Change in other assets and liabilities:
Net decrease in other assets	5,954,000	15,369,000
Net increase in other liabilities	4,759,000	27,810,000
Net cash provided by operating activities	127,680,000	124,970,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of investment securities available for sale	(690,720,000)	(197,709,000)
Purchases of investment securities held to maturity	1,573,000
Proceeds from investment securities available for sale	441,721,000	133,573,000
Proceeds from investment securities held to maturity	757,000	883,000
Redemption of restricted equity securities	1,636,000	92,000
Net non-covered loan and lease (originations) paydowns	(136,582,000)	169,418,000
Net covered loan and lease paydowns	63,417,000	49,379,000
Proceeds from sales of loans	6,777,000	21,009,000
Proceeds from disposals of furniture and equipment	180,000	1,096,000
Purchases of premises and equipment	(16,877,000)	(33,687,000)
Net proceeds from FDIC indemnification asset	48,850,000	6,764,000
Proceeds from sales of non-covered other real estate owned	17,026,000	13,931,000
Proceeds from sales of covered other real estate owned	7,355,000	2,832,000
Proceeds from sale of acquired insurance portfolio		5,150,000
Cash acquired in merger, net of cash consideration paid		179,046,000
Net cash (used) provided by investing activities	(258,033,000)	351,777,000
CASH FLOWS FROM FINANCING ACTIVITIES:
Net decrease in deposit liabilities	(286,867,000)	(29,686,000)
Net increase (decrease) in securities sold under agreements to repurchase	47,130,000	(465,000)
Repayment of term debt	(5,000,000)	(138,719,000)
Redemption of preferred stock		(214,181,000)
Proceeds from issuance of preferred stock		198,289,000
Net proceeds from issuance of common stock		89,786,000
Redemption of warrants		(4,500,000)
Dividends paid on preferred stock		(3,682,000)
Dividends paid on common stock	(11,506,000)	(9,137,000)
Excess tax benefits from stock based compensation	4,000	56,000
Proceeds from stock options exercised	309,000	918,000
Retirement of common stock	(1,960,000)	(259,000)
Net cash used provided by financing activities	(257,890,000)	(111,580,000)
Net (decrease) increase in cash and cash equivalents	(388,243,000)	365,167,000
Cash and cash equivalents, beginning of period	1,004,125,000	605,413,000
Cash and cash equivalents, end of period	615,882,000	970,580,000
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest	41,302,000	46,373,000
Income taxes	6,850,000	150,000
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Change in unrealized gains on investment securities available for sale, net of taxes	11,983,000	16,855,000
Change in unrealized losses on investment securities held to maturity related to factors other than credit, net of taxes	26,000	388,000
Cash dividend declared on common and preferred stock and payable after period-end	5,754,000	5,743,000
Transfer of non-covered loans to non-covered other real estate owned	25,322,000	17,895,000
Transfer of covered loans to covered other real estate owned	8,668,000	2,669,000
Transfer from FDIC indemnification asset to due from FDIC and other	26,839,000	23,037,000
Transfer of covered loans to non-covered loans	4,114,000
Conversion of preferred stock to common stock		198,289,000
Acquisitions:
Assets acquired		1,512,048,000
Liabilities assumed		$ 1,505,611,000