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 21.00% 24.00% 19.00% 28.00%  
Customer A [Member] | Accounts Receivable from Third-Parties [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     30.00%   28.00%
Customer B [Member] | Total Third-Party Revenues [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 17.00% 12.00% 14.00% 13.00%  
Customer B [Member] | Accounts Receivable from Third-Parties [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     17.00%   16.00%
Customer C [Member] | Total Third-Party Revenues [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 18.00%   22.00%    
Customer C [Member] | Accounts Receivable from Third-Parties [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     24.00%   14.00%
Customer D [Member] | Total Third-Party Revenues [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 16.00% 0.00% 11.00% 0.00%  
Customer D [Member] | Accounts Receivable from Third-Parties [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage         0.00%
Customer E [Member] | Total Third-Party Revenues [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 0.00% 18.00%   19.00%  
Customer E [Member] | Accounts Receivable from Third-Parties [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     0.00%   0.00%
Customer F [Member] | Accounts Receivable from Third-Parties [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     0.00%   15.00%