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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