Quarterly report pursuant to Section 13 or 15(d)

Concentrations (Details)

v3.20.1
Concentrations (Details) - Segment
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Total sales [Member]
Concentrations (Textual)
Concentration risk, percentage 78.40% 74.90%
Number of customers 5 4
Total sales [Member] | United States [Member]
Concentrations (Textual)
Concentration risk, percentage 10.00%
Total sales [Member] | First customer [Member]
Concentrations (Textual)
Concentration risk, percentage 17.40% 37.10%
Number of customers 5 4
Total sales [Member] | Two customer [Member]
Concentrations (Textual)
Concentration risk, percentage 12.80% 10.80%
Number of customers 5 4
Total sales [Member] | Three customer
Concentrations (Textual)
Concentration risk, percentage 13.70% 14.40%
Number of customers 5 4
Total sales [Member] | Four customer
Concentrations (Textual)
Concentration risk, percentage 12.30% 12.60%
Number of customers 5 4
Total sales [Member] | Five customer
Concentrations (Textual)
Concentration risk, percentage 22.20%
Number of customers 5
Accounts Receivable [Member]
Concentrations (Textual)
Concentration risk, percentage 85.80%
Number of customers 2
Accounts Receivable [Member] | First customer [Member]
Concentrations (Textual)
Concentration risk, percentage 71.80%
Number of customers 2
Accounts Receivable [Member] | Two customer [Member]
Concentrations (Textual)
Concentration risk, percentage 14.00%
Number of customers 2
Accounts Receivable [Member] | Three customers [Member]
Concentrations (Textual)
Concentration risk, percentage 17.00%
Number of customers 3