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Consolidated Balance Sheets (Parentheticals) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Trade accounts receivable, allowance for doubtful accounts (in Dollars) $ 322 $ 683
Preferred stock, par value (in Dollars per share) $ 0.10 $ 0.10
Preferred stock, shares authorized 1,000,000 1,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value (in Dollars per share) $ 0.10 $ 0.10
Common stock, shares authorized 40,000,000 40,000,000
Common stock, shares issued 18,828,734 18,716,921
Treasury securities, common shares 1,372,757 1,372,757