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Note 2 - INVENTORIES (Tables)
9 Months Ended
Nov. 30, 2018
Inventory Disclosure [Abstract]  
Schedule of Inventory [Table Text Block]
Inventories consist of the following:

   

2018

 
   

November 30,

   

February 28,

 

Current:

               

Book inventory

  $ 30,905,100     $ 27,078,600  

Inventory valuation allowance

    (259,100 )     (460,000 )

Inventories net - current

  $ 30,646,000     $ 26,618,600  
                 

Noncurrent:

               

Book inventory

  $ 1,021,400     $ 707,700  

Inventory valuation allowance

    (417,400 )     (271,800 )

Inventories net - noncurrent

  $ 604,000     $ 435,900