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Commitments and Contingencies (Details)
$ in Millions
Jun. 13, 2018
item
Apr. 16, 2018
Mar. 27, 2018
item
Feb. 28, 2017
item
Feb. 03, 2017
item
Apr. 04, 2017
USD ($)
Commitments and Contingencies            
Number of causes of action in the complaint, demurrer without leave to amend     6      
Number of causes of action in the complaint     7      
Period of partial stay of the case   60 days        
Number of additional lawsuits filed       2    
Number of present and former restaurant hourly employees filed a class action lawsuit         5  
Number of consolidated cases 2          
Internal Revenue Service (IRS)            
Commitments and Contingencies            
Tax disallowance | $           $ 12.9