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Fair Value Measurements (Details) - USD ($)
$ in Thousands
Mar. 29, 2016
Dec. 29, 2015
Fair value of financial instruments    
Transfer of asset levels within the fair value hierarchy $ 0  
Transfer of liability levels within the fair value hierarchy 0  
Interest rate swap   $ (45)
Fair value measured on a recurring basis | Level 2    
Fair value of financial instruments    
Interest rate swap   (45)
Fair value measured on a recurring basis | Level 1    
Fair value of financial instruments    
Deferred compensation plan - assets 18,460 17,401
Deferred compensation plan - liabilities $ (18,466) $ (17,416)