Intangible Assets and Goodwill - Components of Company's Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Finite Lived Intangible Assets [Line Items]
Net Balance	$ 111,267		$ 111,267		$ 120,174
Amortization expense	7,400	$ 8,500	14,800	$ 16,800
Franchise agreements
Finite Lived Intangible Assets [Line Items]
Initial Cost	225,411		225,411		224,397
Accumulated Amortization	(114,144)		(114,144)		(104,223)
Net Balance	$ 111,267		$ 111,267		120,174
Franchise agreements | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	12 years 3 months 18 days		12 years 3 months 18 days
Other Intangible Assets
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 68,488		$ 68,488		66,594
Accumulated Amortization	(46,347)		(46,347)		(40,831)
Net Balance	$ 22,141		$ 22,141		25,763
Other Intangible Assets | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	4 years 4 months 24 days		4 years 4 months 24 days
Software
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 50,456		$ 50,456		48,658
Accumulated Amortization	(35,628)		(35,628)		(32,198)
Net Balance	$ 14,828		$ 14,828		16,460
Software | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	4 years 2 months 12 days		4 years 2 months 12 days
Software Development
Finite Lived Intangible Assets [Line Items]
Capitalized software development costs	$ 1,100		$ 1,100		4,600
Trademarks
Finite Lived Intangible Assets [Line Items]
Initial Cost	1,718		1,718		1,713
Accumulated Amortization	(1,343)		(1,343)		(1,272)
Net Balance	$ 375		$ 375		441
Trademarks | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	9 years 2 months 12 days		9 years 2 months 12 days
Non-compete agreements
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 13,044		$ 13,044		12,953
Accumulated Amortization	(6,536)		(6,536)		(4,878)
Net Balance	$ 6,508		$ 6,508		8,075
Non-compete agreements | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	4 years 3 months 18 days		4 years 3 months 18 days
Training materials
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 2,400		$ 2,400		2,400
Accumulated Amortization	(2,320)		(2,320)		(2,080)
Net Balance	$ 80		$ 80		320
Training materials | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	5 years		5 years
Other..
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 870		$ 870		870
Accumulated Amortization	(520)		(520)		(403)
Net Balance	$ 350		$ 350		$ 467
Other.. | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	7 years		7 years