Quarterly report pursuant to Section 13 or 15(d)

Revenue - Summary of Disaggregated Revenue by Major Component for Each Category (Details)

v3.19.3
Revenue - Summary of Disaggregated Revenue by Major Component for Each Category (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 29, 2019
Sep. 30, 2018
Sep. 29, 2019
Sep. 30, 2018
Disaggregation Of Revenue [Line Items]        
Revenues $ 103,009 $ 99,015 $ 332,993 $ 325,175
Restaurant Sales [Member]        
Disaggregation Of Revenue [Line Items]        
Revenues 97,226 93,488 314,229 307,390
Franchise Income [Member]        
Disaggregation Of Revenue [Line Items]        
Revenues 3,928 4,030 12,907 12,905
Other Operating Income [Member]        
Disaggregation Of Revenue [Line Items]        
Revenues 1,855 1,497 5,857 4,880
Domestic [Member]        
Disaggregation Of Revenue [Line Items]        
Revenues 102,348 98,376 330,889 323,119
Domestic [Member] | Restaurant Sales [Member]        
Disaggregation Of Revenue [Line Items]        
Revenues 97,226 93,488 314,229 307,390
Domestic [Member] | Franchise Income [Member]        
Disaggregation Of Revenue [Line Items]        
Revenues 3,267 3,391 10,803 10,849
Domestic [Member] | Other Operating Income [Member]        
Disaggregation Of Revenue [Line Items]        
Revenues 1,855 1,497 5,857 4,880
International [Member]        
Disaggregation Of Revenue [Line Items]        
Revenues 661 639 2,104 2,056
International [Member] | Franchise Income [Member]        
Disaggregation Of Revenue [Line Items]        
Revenues $ 661 $ 639 $ 2,104 $ 2,056