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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
Dec. 31, 2011
Dec. 25, 2010
Accounts receivable, allowance $ 513,000 $ 737,000
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, authorized 3,000 3,000
Preferred stock, issued      
Common stock, par value $ 0.01 $ 0.01
Common stock, authorized 120,000,000 120,000,000
Common stock, issued 76,123,940 74,604,442
Common stock, outstanding 64,361,491 64,775,234
Treasury stock, shares 8,864,767 7,795,605