Goodwill and Intangible Assets - (Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2022	Dec. 29, 2021	Jul. 20, 2022
Goodwill [Roll Forward]
Balance, beginning of year	$ 36,884	$ 36,884
Balance, end of year	72,740	36,884
Goodwill	72,740	36,884
Denny’s
Goodwill [Roll Forward]
Balance, beginning of year	36,884
Balance, end of year	37,527	36,884
Goodwill	37,527	36,884
Other
Goodwill [Roll Forward]
Balance, beginning of year	0
Balance, end of year	35,213	0
Goodwill	35,213	0
Keke's
Goodwill [Roll Forward]
Addition related to the acquisition	35,213	0
Goodwill			$ 35,213
Franchise Unit
Goodwill [Roll Forward]
Addition related to the acquisition	$ 643	$ 0