Description of Business (Details)	Sep. 08, 2020 restaurant state	Sep. 10, 2019 restaurant state
Franchisor Disclosure [Line Items]
Number of states in which entity operates | state	15	14
Entity Operated Units
Franchisor Disclosure [Line Items]
Number of restaurants	295	312
Franchised Units
Franchisor Disclosure [Line Items]
Number of restaurants	301	274
Franchised Units | GUAM
Franchisor Disclosure [Line Items]
Number of restaurants	1	1