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CONCENTRATION OF RISK - Revenues and Accounts Receivable From Our Largest Customers (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Concentration Risk [Line Items]          
Accounts Receivable $ 43,256   $ 43,256   $ 24,994
Major Customer A [Member] | Total Revenue [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
% of Revenues 43.00% 36.00% 59.00% 57.00%  
Major Customer A [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
Accounts Receivable $ 20,616   $ 20,616    
Major Customer B [Member] | Total Revenue [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
% of Revenues 31.00% 45.00% 25.00% 33.00%  
Major Customer B [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
Accounts Receivable $ 11,960   $ 11,960    
Major Customer C [Member] | Total Revenue [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
% of Revenues 14.00% 7.00% 7.00% 5.00%  
Major Customer C [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
Accounts Receivable $ 4,991   $ 4,991