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COMMITMENTS AND CONTINGENCIES (Details 3) (USD $)
Dec. 29, 2013
Dec. 30, 2012
Revolving credit facility
   
Additional disclosures    
Outstanding letters of credit $ 41,100,000  
Self-Insurance
   
Contingencies    
Estimated insurance recoveries 6,200,000  
Additional disclosures    
Undiscounted ultimate losses of all self-insurance reserves related to our workers' compensation liabilities, net of insurance recoveries 18,783,000 19,800,000
Discount rate of ultimate losses (as a percent) 1.90% 1.10%
Present value of self-insurance reserves $ 18,700,000 $ 19,800,000