Segment Information - Schedule of Segment Results (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020
Segment Reporting Information [Line Items]
Revenue	$ 374,828	$ 167,823	$ 704,247	$ 347,930
Segment Adjusted EBITDA	101,243	40,609	179,466	72,371
Franchise royalties and fees
Segment Reporting Information [Line Items]
Revenue	37,873	28,282	68,287	57,694
Company-operated store sales
Segment Reporting Information [Line Items]
Revenue	206,198	87,660	390,053	182,551
Independently-operated store sales
Segment Reporting Information [Line Items]
Revenue	56,379	0	112,542	0
Advertising fund contributions
Segment Reporting Information [Line Items]
Revenue	19,648	12,619	36,903	27,502
Supply and other revenue
Segment Reporting Information [Line Items]
Revenue	54,730	39,262	96,462	80,183
Operating Segments | Maintenance
Segment Reporting Information [Line Items]
Revenue	145,010	91,514	273,160	191,211
Segment Adjusted EBITDA	44,561	26,339	85,001	47,805
Operating Segments | Maintenance | Franchise royalties and fees
Segment Reporting Information [Line Items]
Revenue	9,090	6,724	17,016	14,057
Operating Segments | Maintenance | Company-operated store sales
Segment Reporting Information [Line Items]
Revenue	126,107	79,504	240,174	167,244
Operating Segments | Maintenance | Independently-operated store sales
Segment Reporting Information [Line Items]
Revenue	0		0
Operating Segments | Maintenance | Advertising fund contributions
Segment Reporting Information [Line Items]
Revenue	0	0	0	0
Operating Segments | Maintenance | Supply and other revenue
Segment Reporting Information [Line Items]
Revenue	9,813	5,286	15,970	9,910
Operating Segments | Car Wash
Segment Reporting Information [Line Items]
Revenue	123,915		238,579
Segment Adjusted EBITDA	43,069		77,224
Operating Segments | Car Wash | Franchise royalties and fees
Segment Reporting Information [Line Items]
Revenue	0		0
Operating Segments | Car Wash | Company-operated store sales
Segment Reporting Information [Line Items]
Revenue	65,705		122,753
Operating Segments | Car Wash | Independently-operated store sales
Segment Reporting Information [Line Items]
Revenue	56,379		112,542
Operating Segments | Car Wash | Advertising fund contributions
Segment Reporting Information [Line Items]
Revenue	0		0
Operating Segments | Car Wash | Supply and other revenue
Segment Reporting Information [Line Items]
Revenue	1,831		3,284
Operating Segments | Paint, Collision & Glass
Segment Reporting Information [Line Items]
Revenue	50,574	35,102	94,466	74,048
Segment Adjusted EBITDA	21,856	11,011	39,495	26,888
Operating Segments | Paint, Collision & Glass | Franchise royalties and fees
Segment Reporting Information [Line Items]
Revenue	19,988	15,239	37,298	32,985
Operating Segments | Paint, Collision & Glass | Company-operated store sales
Segment Reporting Information [Line Items]
Revenue	13,019	6,211	24,949	12,057
Operating Segments | Paint, Collision & Glass | Independently-operated store sales
Segment Reporting Information [Line Items]
Revenue	0		0
Operating Segments | Paint, Collision & Glass | Advertising fund contributions
Segment Reporting Information [Line Items]
Revenue	0	0	0	0
Operating Segments | Paint, Collision & Glass | Supply and other revenue
Segment Reporting Information [Line Items]
Revenue	17,567	13,652	32,219	29,006
Operating Segments | Platform Services
Segment Reporting Information [Line Items]
Revenue	44,841	34,768	79,437	66,926
Segment Adjusted EBITDA	17,602	15,969	28,610	23,434
Operating Segments | Platform Services | Franchise royalties and fees
Segment Reporting Information [Line Items]
Revenue	8,795	6,433	13,973	10,778
Operating Segments | Platform Services | Company-operated store sales
Segment Reporting Information [Line Items]
Revenue	1,463	1,356	2,446	3,334
Operating Segments | Platform Services | Independently-operated store sales
Segment Reporting Information [Line Items]
Revenue	0		0
Operating Segments | Platform Services | Advertising fund contributions
Segment Reporting Information [Line Items]
Revenue	0	0	0	0
Operating Segments | Platform Services | Supply and other revenue
Segment Reporting Information [Line Items]
Revenue	34,583	26,979	63,018	52,814
Corporate and Other
Segment Reporting Information [Line Items]
Revenue	10,488	6,439	18,605	15,745
Segment Adjusted EBITDA	(25,845)	(12,710)	(50,864)	(25,756)
Corporate and Other | Franchise royalties and fees
Segment Reporting Information [Line Items]
Revenue	0	(114)	0	(126)
Corporate and Other | Company-operated store sales
Segment Reporting Information [Line Items]
Revenue	(96)	589	(269)	(84)
Corporate and Other | Independently-operated store sales
Segment Reporting Information [Line Items]
Revenue	0		0
Corporate and Other | Advertising fund contributions
Segment Reporting Information [Line Items]
Revenue	19,648	12,619	36,903	27,502
Corporate and Other | Supply and other revenue
Segment Reporting Information [Line Items]
Revenue	$ (9,064)	$ (6,655)	$ (18,029)	$ (11,547)