Quarterly report pursuant to Section 13 or 15(d)

Customer Concentration (Details)

v3.10.0.1
Customer Concentration (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Customer A [Member] | Total Third-Party Revenues [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 27.00% 46.00% 29.00% 50.00%  
Customer A [Member] | Accounts Receivable from Third-Parties [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     34.00%   39.00%
Customer B [Member] | Total Third-Party Revenues [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 22.00% 27.00% 23.00% 28.00%  
Customer B [Member] | Accounts Receivable from Third-Parties [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     20.00%   32.00%
Customer C [Member] | Total Third-Party Revenues [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 22.00% 13.00% 24.00%    
Customer C [Member] | Accounts Receivable from Third-Parties [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     28.00%   26.00%
Customer D [Member] | Total Third-Party Revenues [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 20.00% 0.00% 15.00% 0.00%  
Customer D [Member] | Accounts Receivable from Third-Parties [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage         0.00%