Quarterly report pursuant to Section 13 or 15(d)

Revenue - Additional Information (Details)

v3.10.0.1
Revenue - Additional Information (Details)
$ in Thousands
 9 Months Ended
Oct. 07, 2018
USD ($)
fund
entree
Dec. 31, 2017
USD ($)
Revenue from Contract with Customer [Abstract]    
Number of entrees to be purchased for each free entree | entree 9  
Number of marketing and national media funds to which the entity and franchisees must contribute a minimum percentage of revenue | fund 2  
Royalties as a percentage of adjusted gross restaurant sales 3.00%  
Term of franchise rights 20 years  
Additional term of franchise rights 10 years  
Disaggregation of Revenue [Line Items]    
Unearned revenue $ 38,237 $ 55,915
Gift card revenue    
Disaggregation of Revenue [Line Items]    
Unearned revenue 28,300 45,400
Deferred loyalty revenue    
Disaggregation of Revenue [Line Items]    
Unearned revenue $ 10,000 $ 10,600
Minimum    
Revenue from Contract with Customer [Abstract]    
Royalties as a percentage of franchised adjusted gross restaurant sales 4.00%  
Maximum    
Revenue from Contract with Customer [Abstract]    
Royalties as a percentage of franchised adjusted gross restaurant sales 5.00%