Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Details 2)

v3.8.0.1
Fair Value Measurements (Details 2) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 25, 2016
Carrying Value    
Disclosures of Fair Value of Other Assets and Liabilities    
Capital lease obligations $ 10,938 $ 11,463
Estimated Fair Value | Level 2    
Disclosures of Fair Value of Other Assets and Liabilities    
Capital lease obligations $ 11,563 $ 12,917