Intangible Assets and Goodwill - Components of Company's Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Finite Lived Intangible Assets [Line Items]
Net Balance	$ 115,334		$ 120,174
Amortization expense	7,400	$ 8,400
Franchise agreements
Finite Lived Intangible Assets [Line Items]
Initial Cost	224,454		224,397
Accumulated Amortization	(109,120)		(104,223)
Net Balance	$ 115,334		120,174
Franchise agreements | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	12 years 3 months 18 days
Other Intangible Assets
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 67,416		66,594
Accumulated Amortization	(43,666)		(40,831)
Net Balance	$ 23,750		25,763
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	$ 49,475		48,658
Accumulated Amortization	(34,009)		(32,198)
Net Balance	$ 15,466		16,460
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	$ 5,200		4,600
Trademarks
Finite Lived Intangible Assets [Line Items]
Initial Cost	1,713		1,713
Accumulated Amortization	(1,307)		(1,272)
Net Balance	$ 406		441
Trademarks | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	9 years 2 months 12 days
Non-compete agreements
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 12,958		12,953
Accumulated Amortization	(5,687)		(4,878)
Net Balance	$ 7,271		8,075
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
Accumulated Amortization	(2,200)		(2,080)
Net Balance	$ 200		320
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
Accumulated Amortization	(463)		(403)
Net Balance	$ 407		$ 467
Other.. | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	7 years