Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 26, 2021	Mar. 27, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020	Dec. 26, 2020
Reclassification [Line Items]
Reclassification of revenue	$ 374,828		$ 167,823	$ 704,247	$ 347,930
Capitalized stock issuance cost						$ 9,000
Stock issuance cost		$ 14,757
IPO
Reclassification [Line Items]
Stock issuance cost				6,000
Franchise royalties and fees
Reclassification [Line Items]
Reclassification of revenue	37,873		28,282	68,287	57,694
Franchise royalties and fees | Revision of Prior Period, Reclassification, Adjustment
Reclassification [Line Items]
Reclassification of revenue			(1,000)		(2,000)
Supply and other revenue
Reclassification [Line Items]
Reclassification of revenue	$ 54,730		39,262	$ 96,462	80,183
Supply and other revenue | Revision of Prior Period, Reclassification, Adjustment
Reclassification [Line Items]
Reclassification of revenue			$ 1,000		$ 2,000