Revenue Disaggregation of Revenue (Details) - USD ($)	4 Months Ended
	Jan. 23, 2022	Jan. 17, 2021
Disaggregation of Revenue [Line Items]
Initial franchise fee	$ 50,000
Royalty and marketing fee, percent of gross sales	5.00%
Revenues	$ 344,711,000	$ 338,541,000
Company Restaurant Sales
Disaggregation of Revenue [Line Items]
Revenues	120,056,000	114,278,000
Franchise Rental Revenues
Disaggregation of Revenue [Line Items]
Revenues	103,099,000	103,749,000
Franchise Royalties
Disaggregation of Revenue [Line Items]
Revenues	57,648,000	57,343,000
Marketing Fees
Disaggregation of Revenue [Line Items]
Revenues	55,801,000	55,776,000
Technology and Sourcing Fees
Disaggregation of Revenue [Line Items]
Revenues	5,000,000	5,090,000
Franchise Fees and Other Services
Disaggregation of Revenue [Line Items]
Revenues	$ 3,107,000	$ 2,305,000