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Revenues - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 28, 2023	Jun. 29, 2022	Jun. 28, 2023	Jun. 29, 2022	Dec. 28, 2022
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognized	$ 116,915	$ 115,017	$ 234,386	$ 218,124
Receivables, net	18,469		18,469		$ 25,576
Liability balance	2,204		2,204
Deferred revenue recognized					1,400
Gift Card Redemption
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Liability balance	6,200		6,200		7,700
Deferred revenue recognized			300
Franchise Equipment Programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognized	500	$ 5,700	2,900	$ 7,900
Inventory related to franchise equipment programs	1,000		1,000
Receivables, net	$ 1,500		$ 1,500
Kitchen Modernization Program For Franchise Restaurants
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Inventory related to franchise equipment programs					3,600
Receivables, net					$ 6,600

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