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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Apr. 01, 2012
Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]    
Allowance for doubtful accounts $ 664 $ 683
Preferred stock, par value $ 0.10 $ 0.10
Preferred stock, shares authorized 1,000,000 1,000,000
Preferred stock, shares issued      
Preferred stock, shares outstanding      
Common stock, par value $ 0.10 $ 0.10
Common stock, shares authorized 40,000,000 40,000,000
Common stock, shares issued 18,757,192 18,716,921
Treasury securities, common shares 1,372,757 1,372,757