Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail)
6 Months Ended
Jun. 30, 2014
USD ($)
Dec. 31, 2013
USD ($)
Jun. 30, 2014
Boa Vista Servicos S.A. [Member]
BRL
Significant Accounting Policies [Line Items]      
Fair value of long term debt $ 1,300,000,000 $ 1,200,000,000  
Carrying value of long term debt 1,100,000,000 1,100,000,000  
Fair value of interest rate swaps 2,800,000 6,000,000  
Interest rate swap term 5 years    
Variable interest maximum exposure to loss 21,800,000    
Percentage of interest acquired in Boa Vista Servicos S.A. (BVS)     15.00%
Investment in Boa Vista Servicos S.A. (BVS) $ 40,800,000 $ 38,200,000 90,000,000