Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Allowance for doubtful accounts (in Dollars)	$ 298	$ 434
Preferred stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in Shares)	1,000,000	1,000,000
Preferred stock, shares issued (in Shares)	0	0
Common Stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized (in Shares)	30,000,000	30,000,000
Common Stock, shares issued (in Shares)	11,882,423	11,770,265
Treasury stock (in Shares)	1,364,789	1,337,568
Rights [Member]
Preferred stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in Shares)	150,000	150,000
Preferred stock, shares issued (in Shares)	0	0