Revenues - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2022	Dec. 29, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Liability balance	$ 1,804
Deferred revenue recognized	1,200
Gift Card Redemption
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Liability balance	5,800	$ 7,200
Deferred revenue recognized	300
Kitchen Equipment Rollout For Franchise Restaurants
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Equipment purchase contract	19,300
Amount committed by the company	5,700
Purchase obligations	2,500
Inventory related to kitchen equipment rollout	10,700
Contract assets	1,600
Kitchen Equipment Rollout For Franchise Restaurants | Accounts Payable
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Purchase obligations	$ 700