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Fair Value Measurements (Tables)
 8 Months Ended
Sep. 06, 2015
Fair Value Disclosures [Abstract]  
Carrying Amounts and Fair Values of Certain Assets

The following tables summarize the carrying amounts and fair values of certain assets at September 6, 2015 and December 28, 2014:

 

     At September 6, 2015  
            Fair Value Estimated Using  
     Carrying
Amount		      Level 1
Inputs		      Level 2
Inputs		      Level 3
Inputs		  

Cash equivalents

    $ 17,370       $ 17,370       $ —       $ —   

Restricted cash equivalents

      57,855         57,855         —         —   

Investments in marketable securities

      5,656         5,656         —         —   

 

     At December 28, 2014  
            Fair Value Estimated Using  
     Carrying
Amount		      Level 1
Inputs		      Level 2
Inputs		      Level 3
Inputs		  

Cash equivalents

    $ 16,290       $ 16,290       $ —       $ —   

Restricted cash equivalents

      93,121         93,121         —         —   

Investments in marketable securities

      4,586         4,586         —         —