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COMMITMENTS, CONTINGENCIES AND LITIGATION - Future minimum capital lease payments and present value of minimum lease payments for capital leases (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]    
2014 $ 2,868  
2015 11,757  
2016 10,713  
2017 10,186  
2018 10,355  
Thereafter 47,341  
Remaining capital lease payments 93,220  
Less: amounts representing imputed interest (33,009)  
Present value of minimum lease payments 60,211  
Less: current portion (6,573) (5,489)
Capital lease obligations $ 53,638 $ 49,800