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
INTEREST INCOME
Loans, including fees	$ 596,390	$ 629,410	$ 649,089
Investment securities:
Taxable	80,184	96,237	112,945
Tax-exempt	12,039	13,333	16,368
Dividends	2,769	2,800	2,479
Loans held for sale	1,958	3,088	5,390
Other interest income	358	505	196
Total Interest Income	693,698	745,373	786,467
INTEREST EXPENSE
Deposits	83,083	122,359	180,826
Short-term borrowings	746	1,455	3,777
Long-term debt	49,709	62,813	80,910
Total Interest Expense	133,538	186,627	265,513
Net Interest Income	560,160	558,746	520,954
Provision for credit losses	135,000	160,000	190,020
Net Interest Income After Provision for Credit Losses	425,160	398,746	330,934
OTHER INCOME
Service charges on deposit accounts	58,078	58,592	60,450
Other service charges and fees	47,482	45,023	40,425
Investment management and trust services	36,483	34,173	32,076
Mortgage banking income	25,674	29,304	25,061
Other	15,449	14,527	14,844
Investment securities gains (losses), net:
Other-than-temporary impairment losses	(1,997)	(14,519)	(17,768)
Less: Portion of (gain) loss recognized in other comprehensive income (before taxes)	(913)	568	4,367
Net other-than-temporary impairment losses	(2,910)	(13,951)	(13,401)
Net gains on sale of investment securities	7,471	14,652	14,480
Investment securities gains, net	4,561	701	1,079
Total Other Income	187,727	182,320	173,935
OTHER EXPENSES
Salaries and employee benefits	227,435	216,487	218,812
Net occupancy expense	44,003	43,533	42,040
FDIC insurance expense	14,480	19,715	26,579
Data processing	13,541	13,263	14,432
Equipment expense	12,870	11,692	12,820
Professional fees	12,159	11,523	9,099
Marketing	9,667	11,163	8,915
Other real estate owned and repossession expense	8,366	7,441	6,941
Telecommunications	8,119	8,543	8,608
Intangible amortization	4,257	5,240	5,747
Other	61,579	59,725	61,544
Total Other Expenses	416,476	408,325	415,537
Income Before Income Taxes	196,411	172,741	89,332
Income taxes	50,838	44,409	15,408
Net Income	145,573	128,332	73,924
Preferred stock dividends and discount accretion	0	(16,303)	(20,169)
Net Income Available to Common Shareholders	$ 145,573	$ 112,029	$ 53,755
PER COMMON SHARE:
Net income (basic)	$ 0.73	$ 0.59	$ 0.31
Net income (diluted)	$ 0.73	$ 0.59	$ 0.31
Cash dividends	$ 0.20	$ 0.12	$ 0.12