Consolidated Condensed Statements Of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Interest and dividend income:
Interest and fees on loans	$ 57,593	$ 65,862	$ 118,698	$ 131,316
Interest and dividends on:
Obligations of U.S. Government, its agencies and other securities	13,794	18,960	27,378	38,013
Obligations of states and political subdivisions	42	92	88	241
Other interest income	57	8	160	14
Total interest and dividend income	71,486	84,922	146,324	169,584
Interest on deposits:
Demand and savings deposits	602	951	1,356	1,942
Time deposits	4,121	6,200	8,760	12,934
Interest on borrowings:
Short-term borrowings	163	193	338	460
Long-term debt	7,920	7,556	15,462	14,913
Total interest expense	12,806	14,900	25,916	30,249
Net interest income	58,680	70,022	120,408	139,335
Provision for loan losses	5,238	12,516	13,576	26,616
Net interest income after provision for loan losses	53,442	57,506	106,832	112,719
Other income:
Income from fiduciary activities	4,044	3,929	7,872	7,651
Service charges on deposit accounts	4,154	4,525	8,225	8,770
Other service income	3,417	2,734	6,151	5,035
Checkcard fee income	3,180	3,251	6,352	6,227
Bank owned life insurance income	1,184	1,228	2,386	2,457
ATM fees	536	682	1,144	1,336
OREO devaluations	(2,648)	(3,355)	(4,007)	(5,890)
Gains (Losses) on Sales of Other Real Estate	2,203	330	3,248	482
Gain on sale of the Vision business			22,167
Other	1,438	1,814	3,590	4,100
Total other income	17,508	15,138	57,128	30,168
Gain on sale of securities		15,362		21,997
Other expense:
Salaries and employee benefits	22,813	25,253	47,636	50,317
Occupancy expense	2,249	2,764	4,919	5,764
Furniture and equipment expense	2,727	2,785	5,348	5,442
Data processing fees	899	1,135	2,099	2,388
Professional fees and services	5,800	5,320	11,381	10,194
Amortization of intangibles	140	669	1,894	1,338
Marketing	705	728	1,548	1,351
Insurance	1,400	2,345	2,890	4,614
Communication	1,494	1,485	3,031	3,041
Loan put provision	2,701	0	3,363	0
Other expense	4,876	4,523	10,165	8,904
Total other expense	45,804	47,007	94,274	93,353
Income before income taxes	25,146	40,999	69,686	71,531
Income taxes	6,260	12,046	19,325	20,382
Net income	18,886	28,953	50,361	51,149
Preferred stock dividends and accretion	1,948	1,464	3,425	2,928
Net income available to common shareholders	$ 16,938	$ 27,489	$ 46,936	$ 48,221
Net income available to common shareholders
Basic	$ 1.10	$ 1.79	$ 3.05	$ 3.13
Diluted	$ 1.10	$ 1.79	$ 3.05	$ 3.13
Weighted average common shares outstanding
Basic	15,405,902	15,398,919	15,405,906	15,398,925
Diluted	15,405,902	15,399,593	15,409,690	15,401,506
Cash dividends declared	$ 0.94	$ 0.94	$ 1.88	$ 1.88