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Note 4 - Property and Equipment, Net (Tables)
 3 Months Ended
May 31, 2017
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
May 31, 2017
    
February
28, 2017
  
Land
   $
513,618
     $
513,618
  
Building
    
4,884,173
      
4,787,855
  
Machinery and equipment
    
10,586,257
      
10,598,355
  
Furniture and fixtures
    
1,049,340
      
1,047,319
  
Leasehold improvements
    
1,534,712
      
1,531,112
  
Transportation equipment
    
434,091
      
418,402
  
Asset impairment
    
(47,891
 )    
(47,891
 )
     
18,954,300
      
18,848,770
  
                 
Less accumulated depreciation
    
(12,600,727
 )    
(12,390,839
 )
Property and equipment
, net
   $
6,353,573
     $
6,457,931