Consolidated Statements of Income (unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Interest income
Loans	$ 11,881	$ 12,048
Securities held-to-maturity	1,520	1,463
Securities available-for-sale	5,617	5,715
Federal funds sold and interest-bearing deposits in other banks	119	139
Total interest income	19,137	19,365
Interest expense
Savings and NOW deposits	610	534
Money market accounts	532	605
Time deposits	1,334	1,681
Securities sold under agreements to repurchase	90	92
Other borrowed funds and subordinated debentures	2,026	2,051
Total interest expense	4,592	4,963
Net interest income	14,545	14,402
Provision for loan losses	750	1,100
Net interest income after provision for loan losses	13,795	13,302
Other operating income
Service charges on deposit accounts	1,942	1,988
Lockbox fees	772	699
Net gains on sales of investments	883	148
Other income	837	784
Total other operating income	4,434	3,619
Operating expenses
Salaries and employee benefits	8,618	8,141
Occupancy	1,282	1,122
Equipment	582	583
FDIC assessments	400	407
Other	2,583	2,547
Total operating expenses	13,465	12,800
Income before income taxes	4,764	4,121
Provision for income taxes	288	313
Net income	4,476	3,808
Class A Common Stock
Operating expenses
Net income	3,502	2,973
Share data:
Weighted average number of shares outstanding, basic	3,569,546	3,550,993
Weighted average number of shares outstanding, diluted	5,557,365	5,545,711
Basic earnings per share	$ 0.98	$ 0.84
Diluted earnings per share	$ 0.81	$ 0.69
Class B Common Stock
Operating expenses
Net income	$ 974	$ 835
Share data:
Weighted average number of shares outstanding, basic	1,986,880	1,993,755
Weighted average number of shares outstanding, diluted	1,986,880	1,993,755
Basic earnings per share	$ 0.49	$ 0.42
Diluted earnings per share	$ 0.49	$ 0.42