Quarterly report pursuant to Section 13 or 15(d)

BASIS OF PRESENTATION (Details)

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BASIS OF PRESENTATION (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jul. 01, 2012
Jun. 30, 2013
Jul. 01, 2012
BASIS OF PRESENTATION        
Number of days in each interim period 91 days 91 days 182 days 182 days
Options excluded (in shares) 693,550 439,328 626,527 332,802