Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
INTEREST INCOME
Interest and fees on non-covered loans	$ 77,637		$ 79,321		$ 155,296		$ 158,054
Interest and fees on covered loans	16,935		22,226		34,278		43,773
Interest and dividends on investment securities:
Taxable	16,535		24,348		34,655		46,391
Exempt from federal income tax	2,291		2,178		4,568		4,343
Dividends	28		4		34		7
Interest on temporary investments and interest bearing deposits	168		340		405		741
Total interest income	113,594		128,417		229,236		253,309
INTEREST EXPENSE
Interest on deposits	8,169		14,698		17,014		30,364
Interest on securities sold under agreement to repurchase and federal funds purchased	79		131		159		253
Interest on term debt	2,305		2,301		4,609		4,590
Interest on junior subordinated debentures	2,029		1,926		4,087		3,839
Total interest expense	12,582		19,056		25,869		39,046
Net interest income	101,012		109,361		203,367		214,263
PROVISION FOR NON-COVERED LOAN AND LEASE LOSSES	6,638		15,459		9,805		30,489
PROVISION FOR COVERED LOAN AND LEASE LOSSES	1,406		3,755		1,375		11,023
Net interest income after provision for loan and lease losses	92,968		90,147		192,187		172,751
NON-INTEREST INCOME
Service charges on deposit accounts	7,190		8,540		13,856		16,361
Brokerage commissions and fees	3,532		3,276		6,476		6,653
Mortgage banking revenue, net	15,641		4,807		28,723		10,082
Gain on investment securities, net:
Gain on sale of investment securities, net	1,030		5,678		1,178		5,678
Total other-than-temporary impairment losses			(110)				(110)
Portion of other-than-temporary impairment losses transferred from other comprehensive income			63				38
Total gain on investment securities, net	1,030		5,631		1,178		5,606
Loss on junior subordinated debentures carried at fair value	(547)		(547)		(1,095)		(1,089)
Change in FDIC indemnification asset	(4,040)		(5,551)		(5,885)		(2,646)
Other income	6,120		3,471		12,910		6,245
Total non-interest income	28,926		19,627		56,163		41,212
NON-INTEREST EXPENSE
Salaries and employee benefits	49,979		43,808		97,072		88,418
Net occupancy and equipment	13,580		12,547		27,078		25,064
Communications	2,845		2,796		5,787		5,606
Marketing	1,761		1,798		2,751		2,649
Services	6,631		6,026		12,793		11,908
Supplies	644		843		1,309		1,624
FDIC assessments	1,886		2,821		3,854		6,694
Net loss on non-covered other real estate owned	889		3,844		4,076		6,677
Net loss on covered other real estate owned	169		73		2,623		1,024
Intangible amortization	1,211		1,251		2,423		2,502
Merger related expenses	153		71		253		252
Other expenses	7,188		7,329		14,613		14,990
Total non-interest expense	86,936		83,207		174,632		167,408
Income before provision for income taxes	34,958		26,567		73,718		46,555
Provision for income taxes	11,681		8,782		24,938		15,303
Net income	23,277		17,785		48,780		31,252
Dividends and undistributed earnings allocated to participating securities	162	[1]	86	[1]	329	[1]	148	[1]
Net earnings available to common shareholders	$ 23,115		$ 17,699		$ 48,451		$ 31,104
Earnings per common share:
Basic	$ 0.21		$ 0.15		$ 0.43		$ 0.27
Diluted	$ 0.21		$ 0.15		$ 0.43		$ 0.27
Weighted average number of common shares outstanding:
Basic	111,897		114,611		111,943		114,593
Diluted	112,078		114,785		112,120		114,796

[1] Represents dividends paid and undistributed earnings allocated to nonvested restricted stock awards.