Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Allowance for doubtful accounts (in Dollars)	$ 333	$ 423
Preferred, par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred, shares authorized (in Shares)	1,000,000	1,000,000
Preferred, 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)	11,899,821	11,770,265
Treasury stock (in Shares)	1,355,715	1,337,568
Rights [Member]
Preferred, par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred, shares authorized (in Shares)	150,000	150,000
Preferred, shares issued (in Shares)	0	0