Revenue Recognition - Contract Balances (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2024	Sep. 24, 2023	Sep. 29, 2024	Sep. 24, 2023	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue recognized related to deferred revenue and customer loyalty program	$ 7,800	$ 8,100	$ 24,100	$ 24,400
Contract Liabilities
Beginning balance			40,793
Ending balance	38,382		38,382
Change			(2,411)
Contract assets	13,400		13,400		$ 7,900
Amortization expense related to contract assets	1,300	$ 900	4,000	$ 2,700
Franchise fee liabilities
Contract Liabilities
Beginning balance			20,564
Ending balance	19,670		19,670
Change			(894)
Unredeemed gift card liabilities
Contract Liabilities
Beginning balance			6,955
Ending balance	5,997		5,997
Change			(958)
Customer loyalty program obligations
Contract Liabilities
Beginning balance			13,274
Ending balance	$ 12,715		12,715
Change			$ (559)