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BASIS OF PRESENTATION (Details)
3 Months Ended9 Months Ended
Sep. 25, 2011
Weeks
Sep. 26, 2010
Weeks
Sep. 25, 2011
Sep. 26, 2010
BASIS OF PRESENTATION    
Number of weeks in each interim period (in weeks)1313  
Options excluded (in shares)285,9373,795142,7509,993