Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Allowance for doubtful accounts (in Dollars)	$ 482	$ 420
Preferred stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common Stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	30,000,000	30,000,000
Common Stock, shares issued	11,774,547	11,791,997
Treasury stock	1,345,250	1,347,941