Condensed Consolidated Statements of Income and Other Comprehensive Income (unaudited) (USD $) In Thousands, except Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Interest income:
Interest and fees on loans, including loans held for sale	$ 36,182	$ 35,165	$ 72,868	$ 70,316
Interest and dividends on securities
Taxable	2,751	2,394	5,033	4,608
Tax exempt	412	394	808	818
Interest and dividends on Federal Reserve and Federal Home Loan Bank stock	357	343	713	962
Other, including interest on federal funds sold	139	148	279	237
Total interest income	39,841	38,444	79,701	76,941
Interest expense:
Interest on deposits	5,511	7,637	11,341	15,233
Interest on repurchase agreements and other short-term borrowings	426	512	854	1,047
Interest on advances from Federal Home Loan Bank	26	17	54	38
Interest on long-term debt	1,000	1,000	2,000	2,000
Total interest expense	6,963	9,166	14,249	18,318
Net interest income	32,878	29,278	65,452	58,623
Provision for loan losses	3,320	3,106	7,707	8,828
Net interest income after provision for loan losses	29,558	26,172	57,745	49,795
Noninterest income:
Service charges on deposit accounts	6,438	5,949	12,318	11,246
Gains on sales of loans, net	347	337	728	779
Trust income	1,577	1,458	3,193	2,882
Loan related fees	476	46	1,359	886
Bank owned life insurance	426	407	836	812
Other noninterest income	1,329	1,345	2,897	2,678
Total noninterest income	10,593	9,542	21,331	19,283
Noninterest expense:
Officer salaries and employee benefits	2,337	1,945	4,510	3,847
Other salaries and employee benefits	10,380	9,687	20,291	19,230
Occupancy, net	1,933	1,742	4,030	3,483
Equipment	905	959	1,773	1,942
Data processing	1,650	1,697	3,442	3,283
Bank franchise tax	1,119	977	2,283	1,955
Legal fees	570	688	1,500	1,281
Professional fees	279	326	685	557
FDIC insurance	839	1,140	1,963	2,139
Other real estate owned provision and expense	(2,186)	(606)	(3,032)	(1,478)
Other noninterest expense	4,948	3,888	10,184	7,901
Total noninterest expense	27,146	23,655	53,693	47,096
Income before income taxes	13,005	12,059	25,383	21,982
Income taxes	4,035	3,506	7,109	6,638
Net income	8,970	8,553	18,274	15,344
Other comprehensive income, net of tax:
Unrealized holding gains on securities available-for-sale	2,978	964	3,646	1,281
Comprehensive income	$ 11,948	$ 9,517	$ 21,920	$ 16,625
Basic earnings per share (in dollars per share)	$ 0.59	$ 0.56	$ 1.19	$ 1.01
Diluted earnings per share (in dollars per share)	$ 0.58	$ 0.56	$ 1.19	$ 1.01
Weighted average shares outstanding-basic (in shares)	15,308	15,228	15,301	15,215
Weighted average shares outstanding-diluted (in shares)	15,332	15,305	15,328	15,252
Dividends declared per share (in dollars per share)	$ 0.305	$ 0.300	$ 0.610	$ 0.600