Intangible Assets and Goodwill - Components of Company's Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Finite Lived Intangible Assets [Line Items]
Net Balance	$ 105,653		$ 105,653		$ 120,174
Amortization expense	7,600	$ 8,300	22,400	$ 25,100
Franchise agreements
Finite Lived Intangible Assets [Line Items]
Initial Cost	224,574		224,574		224,397
Accumulated Amortization	(118,921)		(118,921)		(104,223)
Net Balance	$ 105,653		$ 105,653		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	$ 69,543		$ 69,543		66,594
Accumulated Amortization	(49,037)		(49,037)		(40,831)
Net Balance	$ 20,506		$ 20,506		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	$ 51,580		$ 51,580		48,658
Accumulated Amortization	(37,365)		(37,365)		(32,198)
Net Balance	$ 14,215		$ 14,215		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	$ 1,500		$ 1,500		4,600
Trademarks
Finite Lived Intangible Assets [Line Items]
Initial Cost	1,724		1,724		1,713
Accumulated Amortization	(1,377)		(1,377)		(1,272)
Net Balance	$ 347		$ 347		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	$ 12,969		$ 12,969		12,953
Accumulated Amortization	(7,318)		(7,318)		(4,878)
Net Balance	$ 5,651		$ 5,651		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	$ (2,400)		$ (2,400)		(2,080)
Net Balance					320
Training materials | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	0 years		0 years
Other..
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 870		$ 870		870
Accumulated Amortization	(577)		(577)		(403)
Net Balance	$ 293		$ 293		$ 467
Other.. | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	7 years		7 years