Leases - Lease Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2024	Dec. 27, 2023	Dec. 28, 2022
Lease income
Total lease income	$ 33,426	$ 36,167	$ 38,966
Restructuring charges and exit costs
Lease income
Operating lease income	130	119	183
Variable lease income	$ 61	47	46
Operating lease, lease income, statement of income or comprehensive income	Other Operating Income (Expense), Net
General and administrative expenses
Lease income
Operating lease income	$ 71	118	140
Operating lease, lease income, statement of income or comprehensive income	General and administrative expenses
Franchise and license revenue
Lease income
Operating lease income	$ 24,269	26,353	28,473
Variable lease income	$ 8,895	$ 9,530	$ 10,124
Operating lease, lease income, statement of income or comprehensive income	Revenue recognized