Quarterly report pursuant to Section 13 or 15(d)

Concentrations (Details)

v3.19.2
Concentrations (Details) - Customers
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Total sales [Member]    
Concentrations (Textual)    
Concentration risk, percentage 34.10% 37.80%
Number of customers 1 3
Total sales [Member] | United States [Member]    
Concentrations (Textual)    
Concentration risk, percentage 10.00% 10.00%
Total sales [Member] | First customer [Member]    
Concentrations (Textual)    
Concentration risk, percentage   16.00%
Total sales [Member] | Second customer [Member]    
Concentrations (Textual)    
Concentration risk, percentage   11.20%
Total sales [Member] | Third customer    
Concentrations (Textual)    
Concentration risk, percentage   10.60%
Accounts Receivable [Member]    
Concentrations (Textual)    
Concentration risk, percentage 81.00%  
Number of customers 3  
Accounts Receivable [Member] | First customer [Member]    
Concentrations (Textual)    
Concentration risk, percentage 56.70%  
Accounts Receivable [Member] | Second customer [Member]    
Concentrations (Textual)    
Concentration risk, percentage 10.50%  
Accounts Receivable [Member] | Third customer    
Concentrations (Textual)    
Concentration risk, percentage 13.80%