System Optimization Gains, Net Summary of Disposition Activity (Details) $ in Thousands	12 Months Ended
Dec. 28, 2025 USD ($) Restaurant number_of_restaurants	Dec. 29, 2024 USD ($) number_of_restaurants	Dec. 31, 2023 USD ($) number_of_restaurants
System optimization gains, net
Proceeds from sales of restaurants	$ 4,410	$ 4,946	$ 2,115
System optimization gains, net	$ 1,030	$ 1,219	$ 880
Acquisitions
System optimization gains, net
Restaurants acquired from franchisees \| Restaurant	35
Sale of franchise-operated restaurants to franchisees
System optimization gains, net
Number of restaurants sold to franchisees \| number_of_restaurants	1	50	99
Sale of company-operated restaurants to franchisees
System optimization gains, net
Number of restaurants sold to franchisees \| number_of_restaurants	5	3	0
Proceeds from sales of restaurants	$ 180	$ 1,808	$ 0
Net assets sold	(169)	(1,081)	0
Other	(150)	(1)	0
Gain on sales of restaurants, net, before post-closing adjustments	(139)	726	0
Post-closing adjustments on sales of restaurants	(16)	694	858
System optimization gains, net	(155)	1,420	858
Recognition of deferred gain on sale of property		800	858
Sale of other assets
System optimization gains, net
Proceeds from sales of restaurants	4,230	3,138	2,115
System optimization gains, net	$ 1,185	$ (201)	$ 22

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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The number of franchises purchased during the period when there are significant changes in franchisor-owned outlets or franchised outlets during the period.

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The number of franchises sold during the period when there are significant changes in franchisor-owned outlets or franchised outlets during the period.

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Gain (loss) on disposition of restaurants to franchisees as part of the system optimization initiative, before the impact of post closing purchase price adjustments on previously completed dispositions.

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