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Fair Value Measurements (Tables)
3 Months Ended
Mar. 26, 2017
Fair Value Disclosures [Abstract]  
Carrying Amounts and Fair Values of Certain Assets

The fair values of the Company’s cash equivalents and investments in marketable securities are based on quoted prices in active markets for identical assets. The following tables summarize the carrying amounts and fair values of certain assets at March 26, 2017 and January 1, 2017:

 

     At March 26, 2017  
            Fair Value Estimated Using  
     Carrying      Level 1      Level 2      Level 3  
     Amount      Inputs      Inputs      Inputs  

Cash equivalents

   $ 24,640      $ 24,640      $ —        $ —    

Restricted cash equivalents

     73,624        73,624        —          —    

Investments in marketable securities

     6,854        6,854        —          —    

 

     At January 1, 2017  
            Fair Value Estimated Using  
     Carrying      Level 1      Level 2      Level 3  
     Amount      Inputs      Inputs      Inputs  

Cash equivalents

   $ 7,017      $ 7,017      $ —        $ —    

Restricted cash equivalents

     69,113        69,113        —          —    

Investments in marketable securities

     7,260        7,260        —          —    
Schedule of Estimated Fair Value

Management estimated the approximate fair values of the 2012 fixed rate notes and the 2015 fixed rate notes as follows (in thousands):

 

     March 26, 2017      January 1, 2017  
     Principal Amount      Fair Value      Principal Amount      Fair Value  

2012 Fixed Rate Notes

   $ 910,252      $ 923,905      $ 916,650      $ 932,233  

2015 Five-Year Fixed Rate Notes

     493,750        485,850        495,000        485,595  

2015 Ten-Year Fixed Rate Notes

     790,000        773,410        792,000        765,864