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Revenue from Contracts with Customers (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 27, 2025
Dec. 28, 2024
Dec. 30, 2023
Disaggregation of Revenue [Line Items]      
Revenues $ 696,853 $ 625,807 $ 460,055
Average franchise license term (in years)   10 years  
Deferred revenue not yet being amortized $ 13,600 $ 13,500  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-12-28      
Disaggregation of Revenue [Line Items]      
Remaining amortization period for deferred revenue related to open restaurants (in years) 7 years 6 months    
Royalty revenue      
Disaggregation of Revenue [Line Items]      
Revenues $ 292,466 259,632 186,455
Advertising fees      
Disaggregation of Revenue [Line Items]      
Revenues 247,619 217,630 157,138
Franchise fees      
Disaggregation of Revenue [Line Items]      
Revenues $ 6,505 $ 6,080 $ 5,064