Components of Company's Intangible Assets (Detail) (RMCO, USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Initial Cost	$ 10,097	$ 9,874
Accumulated Amortization	(7,586)	(7,053)
Net Balance	2,511	2,821
Net Balance	69,439	78,338
Franchise Agreements
Business Acquisition [Line Items]
Initial Cost	141,834	139,827
Accumulated Amortization	(72,395)	(61,489)
Net Balance	69,439	78,338
Software
Business Acquisition [Line Items]
Initial Cost	7,222	7,158
Accumulated Amortization	(6,350)	(5,942)
Net Balance	872	1,216
Trademarks
Business Acquisition [Line Items]
Initial Cost	2,875	2,716
Accumulated Amortization	(1,236)	(1,111)
Net Balance	$ 1,639	$ 1,605