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Consolidated Balance Sheets (Parenthetical) (USD $)
Jul. 03, 2011
Dec. 31, 2010
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 975,150 975,150
Preferred stock, shares issued 0 0
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 30,000,000 30,000,000
Common stock, shares issued 20,016,100 19,964,348
Common stock, shares outstanding 19,922,366 19,663,229
Treasury stock, shares 93,734 301,119
Non-Voting Common Stock [Member]
    
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 10,000,000 10,000,000
Common stock, shares issued 0 0
Series A Preferred Stock [Member]
    
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 24,850 24,850
Preferred stock, shares issued 0 0