System Optimization Gains, Net Summary of Disposition Activity (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 28, 2026 USD ($) number_of_restaurants	Jun. 29, 2025 USD ($) number_of_restaurants	Jun. 28, 2026 USD ($) number_of_restaurants Restaurant	Jun. 29, 2025 USD ($) number_of_restaurants Restaurant
System Optimization Gains, Net
Proceeds from sales of restaurants			$ 4,664	$ 1,355
System optimization gains, net	$ 667	$ 387	$ 2,292	$ 297
Sale of franchise-operated restaurants to franchisees
System Optimization Gains, Net
Number of restaurants sold to franchisees \| Restaurant			45	1
Sale of Company-Operated Restaurants to Franchisees [Member]
System Optimization Gains, Net
Number of restaurants sold to franchisees \| number_of_restaurants	1	0	4	2
Proceeds from sales of restaurants	$ 588	$ 0	$ 2,392	$ 55
Net Assets Sold	567	0	2,139	169
Other gain (loss) on disposition, net	(21)	0	(253)	(25)
Loss on sales of restaurants, net	0	0	0	(139)
Post closing adjustments on sales of restaurants	0	(10)	0	(10)
System optimization gains, net	0	(10)	0	(149)
Sale of Company-Operated Restaurants to Franchisees [Member] \| Net cash provided by operating activities
System Optimization Gains, Net
Proceeds from sales of restaurants	588		2,392
Sale of other assets
System Optimization Gains, Net
Proceeds from sales of restaurants	1,868	1,300	4,664	1,300
System optimization gains, net	$ 667	$ 397	$ 2,292	$ 446

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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