Intangible Assets and Goodwill - Components of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Finite Lived Intangible Assets [Line Items]
Other intangible assets, net of accumulated amortization	$ 2,244	$ 2,486
Franchise agreements, net of accumulated amortization	82,288	89,071
Software
Finite Lived Intangible Assets [Line Items]
Initial Weighted Average Amortization Period (in years)	4 years 2 months 12 days
Initial Cost	7,502	7,463
Accumulated Amortization	(6,900)	(6,633)
Other intangible assets, net of accumulated amortization	602	830
Trademarks
Finite Lived Intangible Assets [Line Items]
Initial Weighted Average Amortization Period (in years)	14 years 9 months 18 days
Initial Cost	3,009	2,935
Accumulated Amortization	(1,367)	(1,279)
Other intangible assets, net of accumulated amortization	1,642	1,656
Other Intangible Assets
Finite Lived Intangible Assets [Line Items]
Initial Cost	10,511	10,398
Accumulated Amortization	(8,267)	(7,912)
Other intangible assets, net of accumulated amortization	2,244	2,486
Franchise Agreements
Finite Lived Intangible Assets [Line Items]
Initial Weighted Average Amortization Period (in years)	12 years
Initial Cost	162,835	162,835
Accumulated Amortization	(80,547)	(73,764)
Franchise agreements, net of accumulated amortization	$ 82,288	$ 89,071