Intangible Assets and Goodwill - Components of Company's Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Finite Lived Intangible Assets [Line Items]
Net Balance	$ 114,782		$ 119,349
Amortization expense	4,300	$ 5,800
Franchise agreements
Finite Lived Intangible Assets [Line Items]
Initial Cost	180,867		181,567
Accumulated Amortization	(66,085)		(62,218)
Net Balance	$ 114,782		119,349
Franchise agreements | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	12 years 6 months
Other Intangible Assets
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 25,066		17,801
Accumulated Amortization	(8,960)		(9,325)
Net Balance	$ 16,106		8,476
Other Intangible Assets | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	6 years 3 months 18 days
Software
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 13,357		13,762
Accumulated Amortization	(7,903)		(8,111)
Net Balance	$ 5,454		5,651
Software | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	4 years 4 months 24 days
Trademarks
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 1,334		1,539
Accumulated Amortization	(682)		(902)
Net Balance	$ 652		637
Trademarks | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	10 years 2 months 12 days
Software Development
Finite Lived Intangible Assets [Line Items]
Software development costs, not yet completed	$ 700		600
Non-compete agreement
Finite Lived Intangible Assets [Line Items]
Initial Cost	2,500		2,500
Accumulated Amortization	(375)		(312)
Net Balance	$ 2,125		$ 2,188
Non-compete agreement | Weighted Average
Finite Lived Intangible Assets [Line Items]
Useful life of intangible assets	10 years
Other - booj
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 7,875
Net Balance	$ 7,875