XML 53 R39.htm IDEA: XBRL DOCUMENT v3.21.1
INVENTORIES (Details) - Schedule of Inventory, Noncurrent - USD ($)
Feb. 28, 2021
Feb. 29, 2020
Inventory Current [Member]    
Current:    
Book inventory $ 52,276,200 $ 30,346,900
Inventory valuation allowance (513,800) (259,600)
Inventories net 51,762,400 30,087,300
Inventory, Noncurrent [Member]    
Current:    
Book inventory 894,300 1,226,500
Inventory valuation allowance (209,000) (209,800)
Inventories net $ 685,300 $ 1,016,700