Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Customer represented more than 10% of total net revenues (Details)

v3.19.3
Summary of Significant Accounting Policies - Customer represented more than 10% of total net revenues (Details)
1 Months Ended 3 Months Ended 9 Months Ended
Apr. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Concentration Risk, Percentage 80.00%        
Sales Revenue, Net [Member]          
Concentration Risk, Percentage       10.00% 10.00%
Accounts Receivable [Member]          
Concentration Risk, Percentage       10.00%  
Customer A [Member] | Sales Revenue, Net [Member]          
Concentration Risk, Percentage   11.00% 23.00% 22.00% 10.00%
Customer A [Member] | Accounts Receivable [Member]          
Concentration Risk, Percentage       15.00%  
Customer B [Member] | Sales Revenue, Net [Member]          
Concentration Risk, Percentage         17.00%