Quarterly report pursuant to Section 13 or 15(d)

Major Customers and Vendors (Details)

v3.20.1
Major Customers and Vendors (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2020
customer
item
Mar. 31, 2019
customer
item
Dec. 31, 2019
Purchases | Vendor concentration risk      
Significant Customers and Vendors      
Number of vendors | item 2 2  
Purchases | Vendor concentration risk | Major vendor one      
Significant Customers and Vendors      
Percentage of concentration risk 22.00% 28.00%  
Purchases | Vendor concentration risk | Major vendor two      
Significant Customers and Vendors      
Percentage of concentration risk 14.00% 16.00%  
Net sales | Customer concentration risk      
Significant Customers and Vendors      
Number of customers | customer 2 2  
Net sales | Customer one | Customer concentration risk      
Significant Customers and Vendors      
Percentage of concentration risk 27.00% 26.00%  
Net sales | Customer two | Customer concentration risk      
Significant Customers and Vendors      
Percentage of concentration risk 14.00% 18.00%  
Net accounts receivable | Customer one | Customer concentration risk      
Significant Customers and Vendors      
Percentage of concentration risk 43.00%   43.00%
Net accounts receivable | Customer two | Customer concentration risk      
Significant Customers and Vendors      
Percentage of concentration risk 9.00%   12.00%