Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Interest and dividend income:
Interest and fees on loans	$ 42,664	$ 43,571	$ 126,999	$ 126,234
Interest on Federal funds sold	1	2	1	17
Interest on deposits in other banks	22	49	55	72
Interest and dividends on securities:
Taxable	3,148	3,176	10,405	10,218
Nontaxable	1,771	1,642	5,294	4,539
Total interest and dividend income	47,606	48,440	142,754	141,080
Interest expense:
Interest on deposits	5,924	7,956	18,774	23,056
Interest on Federal funds purchased		5	7	19
Interest on short-term borrowings	466	367	838	1,628
Interest on long-term borrowings	1,770	1,463	5,266	4,001
Total interest expense	8,160	9,791	24,885	28,704
Net interest income	39,446	38,649	117,869	112,376
Provision for loan losses	3,600	5,912	14,400	14,868
Net interest income after provision for loan losses	35,846	32,737	103,469	97,508
Noninterest income:
Service charges on deposit accounts	2,294	2,243	6,568	6,795
Other service charges, commissions and fees	3,254	2,860	9,529	8,311
Gains on securities transactions, net	499	38	483	62
Other-than-temporary impairment losses	(400)		(400)
Gains on sales of loans	4,861	5,962	14,132	15,701
Gains (losses) on sales of other real estate and bank premises, net	118	332	(972)	376
Other operating income	918	918	2,714	2,948
Total noninterest income	11,544	12,353	32,054	34,193
Noninterest expenses:
Salaries and benefits	18,076	17,451	53,310	50,269
Occupancy expenses	2,885	2,947	8,307	8,453
Furniture and equipment expenses	1,756	1,691	5,097	4,874
Other operating expenses	11,920	11,895	38,562	42,336
Total noninterest expenses	34,637	33,984	105,276	105,932
Income before income taxes	12,753	11,106	30,247	25,769
Income tax expense	3,682	3,033	8,162	7,271
Net income	9,071	8,073	22,085	18,498
Dividends paid and accumulated on preferred stock	462	462	1,386	1,227
Accretion of discount on preferred stock	66	62	195	163
Net income available to common shareholders	$ 8,543	$ 7,549	$ 20,504	$ 17,108
Earnings per common share, basic	$ 0.33	$ 0.29	$ 0.79	$ 0.68
Earnings per common share, diluted	$ 0.33	$ 0.29	$ 0.79	$ 0.68