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Debt - Schedule of Debt (Detail) (RMCO, USD $)
Sep. 30, 2013
Dec. 31, 2012
Debt Instrument [Line Items]    
Less current portion $ (17,300,000) $ (10,600,000)
Debt, net of current portion 211,657,000 221,726,000
2013 Credit Facility
   
Debt Instrument [Line Items]    
Credit Facility 228,957,000  
2010 Credit Facility
   
Debt Instrument [Line Items]    
Credit Facility   $ 232,326,000