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Note 5 - Short-term Investments (Tables)
6 Months Ended
Sep. 30, 2021
Notes Tables  
Marketable Securities [Table Text Block]
   

September

30, 2021

   

March

31, 2021

 
       $        $  

Term deposits issued in US currency earning interest at ranges between 0.19% and 0.30% and maturing on various dates from November 4, 2021, to December 20, 2021

    12,419       7,542  

Term deposits issued in CAD currency earning interest at ranges between 0.51% and 0.60% and maturing on various dates from December 2, 2021, to December 20, 2021

    1,442       2,247  

Total short-term investments

    13,861       9,789