Quarterly report pursuant to Section 13 or 15(d)

Concentration of Risk (Details)

v3.19.2
Concentration of Risk (Details)
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Customer A | Total Revenue    
Concentration Risk [Line Items]    
Percentage of accounts receivable and total sales 53.00% 56.00%
Customer A | Accounts Receivable    
Concentration Risk [Line Items]    
Percentage of accounts receivable and total sales 60.00%  
Customer B | Total Revenue    
Concentration Risk [Line Items]    
Percentage of accounts receivable and total sales 15.00% 8.00%
Customer B | Accounts Receivable    
Concentration Risk [Line Items]    
Percentage of accounts receivable and total sales 0.00%