Intangible Assets and Goodwill - Components of Company's Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Finite Lived Intangible Assets [Line Items]
Net Balance	$ 131,983		$ 131,983		$ 143,832
Amortization expense	8,500	$ 6,400	16,800	$ 12,700
Franchise agreements
Finite Lived Intangible Assets [Line Items]
Initial Cost	267,088		267,088		267,770
Accumulated Amortization	(135,105)		(135,105)		(123,938)
Net Balance	131,983		$ 131,983		143,832
Franchise agreements | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets			12 years 8 months 12 days
Other Intangible Assets
Finite Lived Intangible Assets [Line Items]
Initial Cost	66,956		$ 66,956		70,894
Accumulated Amortization	(34,569)		(34,569)		(38,364)
Net Balance	32,387		$ 32,387		32,530
Other Intangible Assets | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets			4 years 3 months 18 days
Software
Finite Lived Intangible Assets [Line Items]
Initial Cost	48,176		$ 48,176		51,368
Accumulated Amortization	(27,335)		(27,335)		(29,682)
Net Balance	20,841		$ 20,841		21,686
Software | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets			4 years
Software Development
Finite Lived Intangible Assets [Line Items]
Capitalized software development costs	4,700		$ 4,700		1,900
Trademarks
Finite Lived Intangible Assets [Line Items]
Initial Cost	2,361		2,361		2,356
Accumulated Amortization	(1,708)		(1,708)		(1,533)
Net Balance	653		$ 653		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	13,149		$ 13,149		13,100
Accumulated Amortization	(3,332)		(3,332)		(4,563)
Net Balance	9,817		$ 9,817		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	(1,840)		(1,840)		(1,600)
Net Balance	560		$ 560		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	(354)		(354)		(986)
Net Balance	$ 516		$ 516		$ 684
Other.. | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets			6 years 7 months 6 days