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Commitments and Contingencies (Details)
$ in Millions
Feb. 28, 2017
item
Feb. 03, 2017
item
Apr. 04, 2017
USD ($)
Commitments and contingencies      
Number of additional lawsuits filed 2    
Number of present and former restaurant hourly employees filed a class action lawsuit   5  
Internal Revenue Service (IRS)      
Commitments and contingencies      
Tax disallowance | $     $ 12.9