Operating (Gains), Losses and Other Charges, Net - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2024	Dec. 27, 2023	Dec. 28, 2022
Finite-Lived Intangible Assets [Line Items]
Asset impairment charges	$ 792	$ 2,214	$ 963
Tangible asset impairment charges	600	1,300	600
Operating lease, impairment loss		900	300
Impairment related to finance lease ROU assets		100	$ 100
Accrued severance and other restructuring charges	300	1,400
Reacquired franchise rights
Finite-Lived Intangible Assets [Line Items]
Impairment of franchisee rights	100	$ 100
Franchise agreements
Finite-Lived Intangible Assets [Line Items]
Impairment of franchisee rights	$ 100