Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Loans	$ 252,865	$ 259,318	$ 261,221
Investment securities - taxable	14,115	22,116	42,392
Investment securities - tax-exempt	22,544	27,685	35,094
Covered loans	28,904	17,285	1,419
Federal funds sold and other short-term investments	3,083	2,463	1,625
Total interest income	321,511	328,867	341,751
Deposits	27,256	37,127	64,177
Borrowed funds	2,743	3,267	12,569
Senior and subordinated debt	9,892	9,124	13,473
Total interest expense	39,891	49,518	90,219
Net interest income	281,620	279,349	251,532
Provision for loan losses	80,582	147,349	215,672
Net interest income after provision for loan losses	201,038	132,000	35,860
Service charges on deposit accounts	37,879	35,884	38,754
Wealth management fees	16,224	15,063	14,059
Other service charges, commissions, and fees	20,486	18,238	16,529
Card-based fees	19,593	17,577	15,826
Total fee-based revenues	94,182	86,762	85,168
Securities gains, net (reclassified from other comprehensive income (loss))	2,410	12,216	2,110
Gains on FDIC-assisted transactions		4,303	13,071
Gains on early extinguishment of debt			15,258
Other	5,345	5,270	7,395
Total noninterest income	101,937	108,551	123,002
Salaries and wages	101,703	94,361	82,640
Retirement and other employee benefits	27,071	20,017	23,908
OREO expense, net	16,293	50,034	23,459
Net occupancy and equipment expense	32,953	32,218	31,724
Technology and related costs	10,905	11,070	8,987
Professional services	26,356	22,903	15,796
FDIC premiums	7,990	10,880	13,673
Advertising and promotions	6,198	6,642	7,313
Merchant card expense	8,643	7,882	6,453
Other expenses	23,792	22,772	20,835
Total noninterest expense	261,904	278,779	234,788
Income (loss) before income tax expense (benefit)	41,071	(38,228)	(75,926)
Income tax expense (benefit)	4,508	(28,544)	(50,176)
Net income (loss)	36,563	(9,684)	(25,750)
Preferred dividends and accretion on preferred stock	(10,776)	(10,299)	(10,265)
Net (income) loss applicable to non-vested restricted shares	(350)	266	464
Net income (loss) applicable to common shares	$ 25,437	$ (19,717)	$ (35,551)
Per Common Share Data
Basic earnings (loss) per common share (in Dollars per share)	$ 0.35	$ (0.27)	$ (0.71)
Diluted earnings (loss) per common share (in Dollars per share)	$ 0.35	$ (0.27)	$ (0.71)
Weighted-average common shares outstanding (in Shares)	73,289	72,422	50,034
Weighted-average diluted common shares outstanding (in Shares)	73,289	72,422	50,034