Quarterly report pursuant to Section 13 or 15(d)

Customer Concentration (Details)

v3.19.3
Customer Concentration (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Customer A [Member] | Total Revenues from External Customers [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 14.00% 17.00% 17.00% 18.00%  
Customer A [Member] | Accounts Receivable from External Customers [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     11.00%   21.00%
Customer B [Member] | Total Revenues from External Customers [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 10.00% 15.00% 11.00% 15.00%  
Customer B [Member] | Accounts Receivable from External Customers [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage         14.00%
Customer C [Member] | Total Revenues from External Customers [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 13.00% 15.00% 12.00% 20.00%  
Customer C [Member] | Accounts Receivable from External Customers [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage         18.00%
Customer D [Member] | Total Revenues from External Customers [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 10.00% 18.00% 12.00% 13.00%  
Customer D [Member] | Accounts Receivable from External Customers [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     11.00%    
Customer E [Member] | Accounts Receivable from External Customers [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     11.00%