Intangible Assets and Goodwill - Components of Company's Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Finite Lived Intangible Assets [Line Items]
Initial Cost	$ 10,450	$ 10,398
Accumulated Amortization	(8,095)	(7,912)
Net Balance	2,355	2,486
Net Balance	85,680	89,071
Software
Finite Lived Intangible Assets [Line Items]
Initial Weighted Average Amortization Period (in years)	4 years 2 months 12 days
Initial Cost	7,491	7,463
Accumulated Amortization	(6,772)	(6,633)
Net Balance	719	830
Trademarks
Finite Lived Intangible Assets [Line Items]
Initial Weighted Average Amortization Period (in years)	14 years 10 months 24 days
Initial Cost	2,959	2,935
Accumulated Amortization	(1,323)	(1,279)
Net Balance	1,636	1,656
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	(77,155)	(73,764)
Net Balance	$ 85,680	$ 89,071