Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest Income
Residential real estate loans	$ 30,850	$ 33,060	$ 45,401
Commercial loans	121,425	130,249	143,861
Consumer and other loans	35,096	40,538	42,130
Investment securities	66,386	76,262	57,010
Total interest income	253,757	280,109	288,402
Interest Expense
Deposits	18,183	25,269	35,598
Securities sold under agreements to repurchase	1,308	1,353	1,607
Federal Home Loan Bank advances	12,566	12,687	9,523
Federal funds purchased and other borrowed funds	229	224	284
Subordinated debentures	3,428	4,961	6,622
Total interest expense	35,714	44,494	53,634
Net Interest Income	218,043	235,615	234,768
Provision for loan losses	21,525	64,500	84,693
Net interest income after provision for loan losses	196,518	171,115	150,075
Non-Interest Income
Service charges and other fees	45,343	44,194	43,040
Miscellaneous loan fees and charges	4,363	3,919	4,906
Gain on sale of loans	32,227	21,132	27,233
Gain on sale of investments	0	346	4,822
Other income	9,563	8,608	7,545
Total non-interest income	91,496	78,199	87,546
Non-Interest Expense
Compensation and employee benefits	95,373	85,691	87,728
Occupancy and equipment	23,837	23,599	24,261
Advertising and promotions	6,413	6,469	6,831
Outsourced data processing	3,324	3,153	3,057
Other real estate owned	18,964	27,255	22,193
Federal Deposit Insurance Corporation premiums	6,085	8,169	9,121
Core deposit intangible amortization	2,110	2,473	3,180
Goodwill impairment charge	0	40,159	0
Other expense	37,315	35,156	31,577
Total non-interest expense	193,421	232,124	187,948
Income Before Income Taxes	94,593	17,190	49,673
Federal and state income tax expense (benefit)	19,077	(281)	7,343
Net Income	$ 75,516	$ 17,471	$ 42,330
Basic earnings per share	$ 1.05	$ 0.24	$ 0.61
Diluted earnings per share	$ 1.05	$ 0.24	$ 0.61
Dividends declared per share	$ 0.53	$ 0.52	$ 0.52
Average outstanding shares - basic	71,928,570	71,915,073	69,657,980
Average outstanding shares - diluted	71,928,656	71,915,073	69,660,345