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Revenues - (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2023	Dec. 28, 2022	Dec. 29, 2021
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 463,922	$ 456,429	$ 398,174
Receivables, net	21,391	25,576
Contract with customer	2,164
Amount of revenue recognized that was previously included in balance of obligation	2,700
Gift Card Redemption
Disaggregation of Revenue [Line Items]
Contract with customer	7,800	7,700
Amount of revenue recognized that was previously included in balance of obligation	500
Franchise Equipment Programs
Disaggregation of Revenue [Line Items]
Revenue recognized	4,800	19,300
Inventory related to kitchen equipment rollout	600
Receivables, net	$ 300
Kitchen Modernization Program For Franchise Restaurants
Disaggregation of Revenue [Line Items]
Inventory related to kitchen equipment rollout		3,600
Receivables, net		$ 6,600

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