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STOCK-BASED COMPENSATION (Tables)
 9 Months Ended
Sep. 25, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of restricted and unrestricted stock and performance share units activity
Restricted and unrestricted stock awards and performance share units activity for the thirty-nine weeks ended September 25, 2015, was as follows (shares in thousands):
 
Shares
 
Weighted- average grant-date price
Non-vested at beginning of period
1,547

 
$
20.03

Granted
498

 
$
22.25

Vested
(582
)
 
$
18.06

Forfeited
(274
)
 
$
15.17

Non-vested at the end of the period
1,189

 
$
22.32