Note 2 - Supplemental Cash Flow Information (Tables)
 9 Months Ended
Nov. 30, 2021
Notes Tables  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
  

Nine Months Ended

 
  

November 30,

 

Cash paid for:

 

2021

  

2020

 

Interest

 $5,202  $70,953 

Income taxes

  247,273   11,066 

Non-cash Operating Activities

        

Accrued Inventory

 $196,222  $136,998