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BASIS OF PRESENTATION AND ORGANIZATION (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Jan. 01, 2017
Organization Consolidation And Presentation Of Financial Statements Abstract          
CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption         $ 5,112
NewAccountingPronouncementOrChangeInAccountingPrincipleRetrospectiveAdjustmentsAbstract          
USTN Cash Payment Deferred     $ 3,200    
Error Corrections and Prior Period Adjustments Restatement [Line Items]          
Sales Revenue, Net $ 372,124 $ 124,970 672,684 $ 223,971  
Operating Costs and Expenses $ 275,839 $ 91,004 $ 531,563 $ 168,170