Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest Income
Interest and fees on loans	$ 35,354	$ 36,514	$ 36,919
Interest on interest-bearing deposits	240	155	128
Interest on securities - taxable	6,613	6,745	5,588
Interest on securities - nontaxable	6,463	6,532	6,504
Total interest income	48,670	49,946	49,139
Interest Expense
Interest on time deposits of $100,000 or more	1,491	2,019	3,439
Interest on other deposits	6,396	7,165	7,719
Total interest expense	7,887	9,184	11,158
Net interest income	40,783	40,762	37,981
Provision for loan losses	3,134	2,949	3,409
Net interest income after provision for loan losses	37,649	37,813	34,572
Noninterest Income
Service charges on deposit accounts	2,594	2,617	2,858
Other service charges and fees	243	287	317
Credit card fees	3,278	3,197	2,954
Trust income	1,313	1,087	1,118
BOLI income	814	762	760
Other income	472	449	354
Realized securities gains (losses), net	25	11	(14)
Total noninterest income	8,739	8,410	8,347
Noninterest Expense
Salaries and employee benefits	12,005	11,357	10,963
Occupancy, furniture and fixtures	1,589	1,599	1,875
Data processing and ATM	1,593	1,701	1,499
FDIC assessment	475	677	1,080
Credit card processing	2,442	2,485	2,300
Intangible assets amortization	1,083	1,083	1,083
Net costs of other real estate owned	208	518	214
Franchise taxes	901	780	963
Other operating expenses	3,100	3,138	3,150
Total noninterest expense	23,396	23,338	23,127
Income before income taxes	22,992	22,885	19,792
Income tax expense	5,245	5,247	4,223
Net income	$ 17,747	$ 17,638	$ 15,569
Basic net income per common share (in dollars per share)	$ 2.56	$ 2.54	$ 2.25
Fully diluted net income per common share (in dollars per share)	$ 2.55	$ 2.54	$ 2.24