Significant Accounting Policies - Net Income (Loss) Attributable to Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2025	Sep. 29, 2024	Sep. 28, 2025	Sep. 29, 2024
Noncontrolling Interest [Line Items]
Nonredeemable noncontrolling interests	$ (266)	$ (63)	$ (57)	$ 318
Total net income (loss)	4,707	41,808	23,460	68,687
Corporate Joint Venture
Noncontrolling Interest [Line Items]
Papa John’s International, Inc.	(544)	(46)	58	1,285
Redeemable noncontrolling interests	32	43	84	233
Nonredeemable noncontrolling interests	(266)	(63)	(57)	318
Total net income (loss)	$ (778)	$ (66)	$ 85	$ 1,836