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CONCENTRATION OF RISK - Revenues and Accounts Receivable From Our Largest Customers (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Concentration Risk [Line Items]          
Accounts Receivable $ 39,702   $ 39,702   $ 24,994
Major Customer A [Member] | Total Revenue [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
% of Revenues 73.00% 76.00% 66.00% 64.00%  
Major Customer A [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
Accounts Receivable $ 20,210   $ 20,210    
Major Customer B [Member] | Total Revenue [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
% of Revenues 17.00% 18.00% 23.00% 29.00%  
Major Customer B [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
Accounts Receivable $ 10,587   $ 10,587    
Major Customer C [Member] | Total Revenue [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
% of Revenues 5.00% 3.00% 4.00% 4.00%  
Major Customer C [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
Accounts Receivable $ 3,561   $ 3,561