Intangible Assets and Goodwill - Components of Company's Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Finite Lived Intangible Assets [Line Items]
Net Balance	$ 124,521		$ 124,521		$ 143,832
Amortization expense	8,300	$ 7,900	25,100	$ 20,600
Franchise agreements
Finite Lived Intangible Assets [Line Items]
Initial Cost	264,274		264,274		267,770
Accumulated Amortization	(139,753)		(139,753)		(123,938)
Net Balance	124,521		$ 124,521		143,832
Franchise agreements | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets			12 years 7 months 6 days
Other Intangible Assets
Finite Lived Intangible Assets [Line Items]
Initial Cost	65,986		$ 65,986		70,894
Accumulated Amortization	(37,468)		(37,468)		(38,364)
Net Balance	28,518		$ 28,518		32,530
Other Intangible Assets | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets			4 years 4 months 24 days
Software
Finite Lived Intangible Assets [Line Items]
Initial Cost	47,416		$ 47,416		51,368
Accumulated Amortization	(29,223)		(29,223)		(29,682)
Net Balance	18,193		$ 18,193		21,686
Software | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets			4 years 1 month 6 days
Software Development
Finite Lived Intangible Assets [Line Items]
Capitalized software development costs	3,600		$ 3,600		1,900
Trademarks
Finite Lived Intangible Assets [Line Items]
Initial Cost	2,401		2,401		2,356
Accumulated Amortization	(1,833)		(1,833)		(1,533)
Net Balance	568		$ 568		823
Trademarks | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets			8 years 3 months 18 days
Non-compete agreements
Finite Lived Intangible Assets [Line Items]
Initial Cost	12,899		$ 12,899		13,100
Accumulated Amortization	(4,075)		(4,075)		(4,563)
Net Balance	8,824		$ 8,824		8,537
Non-compete agreements | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets			4 years 3 months 18 days
Training materials
Finite Lived Intangible Assets [Line Items]
Initial Cost	2,400		$ 2,400		2,400
Accumulated Amortization	(1,960)		(1,960)		(1,600)
Net Balance	440		$ 440		800
Training materials | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets			5 years
Other..
Finite Lived Intangible Assets [Line Items]
Initial Cost	870		$ 870		1,670
Accumulated Amortization	(377)		(377)		(986)
Net Balance	$ 493		$ 493		$ 684
Other.. | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets			6 years 7 months 6 days