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Note 6 - Property and Equipment, Net (Tables)
9 Months Ended
Nov. 30, 2020
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
November 30, 2020
   
February 29, 2020
 
Land
  $
513,618
    $
513,618
 
Building
   
4,827,807
     
5,031,395
 
Machinery and equipment
   
10,057,880
     
10,664,396
 
Furniture and fixtures
   
797,498
     
852,557
 
Leasehold improvements
   
985,407
     
1,154,396
 
Transportation equipment
   
429,789
     
440,989
 
     
17,611,999
     
18,657,351
 
                 
Less accumulated depreciation
   
(12,341,913
)    
(12,719,338
)
Property and equipment, net
  $
5,270,086
    $
5,938,013