Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 25, 2022	Dec. 26, 2021
Disaggregation of Revenue [Line Items]
Total revenues	$ 891,551	$ 730,162	$ 601,193
Restaurant sales
Disaggregation of Revenue [Line Items]
Total revenues	877,092	719,181	592,343
In-restaurant dining sales
Disaggregation of Revenue [Line Items]
Total revenues	716,960	571,048	452,989
Third-party delivery sales
Disaggregation of Revenue [Line Items]
Total revenues	91,433	82,049	70,486
Take-out sales
Disaggregation of Revenue [Line Items]
Total revenues	68,699	66,084	68,868
Franchise revenues
Disaggregation of Revenue [Line Items]
Total revenues	14,459	10,981	8,850
Royalty and system fund contributions
Disaggregation of Revenue [Line Items]
Total revenues	13,464	10,683	8,575
Initial fees
Disaggregation of Revenue [Line Items]
Total revenues	388	298	275
Business combinations - revenues recognized
Disaggregation of Revenue [Line Items]
Total revenues	$ 607	$ 0	$ 0