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Revenues - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 25, 2024	Sep. 27, 2023	Sep. 25, 2024	Sep. 27, 2023	Dec. 27, 2023
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognized	$ 111,759	$ 114,183	$ 337,660	$ 348,569
Contract with customer	17,038		17,038		$ 21,391
Liability balance	1,946		1,946
Deferred revenue recognized					2,100
Gift Card Redemption
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Liability balance	5,900		5,900		7,800
Deferred revenue recognized			400
Franchise Equipment Programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognized	100	$ 1,700	600	$ 4,600
Inventory related to franchise equipment programs	300		300		600
Contract with customer	$ 200		$ 200		$ 300

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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