Revenues - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2024	Mar. 29, 2023
Disaggregation of Revenue [Line Items]
Total operating revenue	$ 109,974	$ 117,471
Company restaurant sales
Disaggregation of Revenue [Line Items]
Total operating revenue	52,342	53,452
Royalties
Disaggregation of Revenue [Line Items]
Total operating revenue	29,306	30,027
Advertising revenue
Disaggregation of Revenue [Line Items]
Total operating revenue	18,138	19,668
Initial and other fees
Disaggregation of Revenue [Line Items]
Total operating revenue	1,816	4,990
Occupancy revenue
Disaggregation of Revenue [Line Items]
Total operating revenue	8,372	9,334
Franchise and license revenue
Disaggregation of Revenue [Line Items]
Total operating revenue	$ 57,632	$ 64,019