Annual report pursuant to Section 13 and 15(d)

Major suppliers (Details)

v3.20.1
Major suppliers (Details) - Vendor
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Concentration Risk [Abstract]    
Number of vendors utilized to purchase inventory 1 1
Inventory Purchases [Member] | Supplier Concentration Risk [Member]    
Concentration Risk [Abstract]    
Concentration risk percentage 74.00% 70.00%