Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Note 5 - Marketable Securities - Marketable Securities (Details) (Parentheticals)

v3.19.2
Note 5 - Marketable Securities - Marketable Securities (Details) (Parentheticals)
$ in Thousands, $ in Thousands
12 Months Ended
Mar. 31, 2019
CAD ($)
Mar. 31, 2018
CAD ($)
Mar. 31, 2019
USD ($)
Mar. 31, 2018
USD ($)
Statement Line Items [Line Items]        
Total Marketable securities $ 11,892 $ 26    
Term deposit, one [Member]        
Statement Line Items [Line Items]        
Total Marketable securities $ 26 $ 20
Term deposit, one [Member] | Bottom of range [member]        
Statement Line Items [Line Items]        
Financial instrument, interest rate 2.23%    
Term deposit, one [Member] | Top of range [member]        
Statement Line Items [Line Items]        
Financial instrument, maturity date March 13, 2019    
Term deposit, two[Member]        
Statement Line Items [Line Items]        
Total Marketable securities $ 2,696 $ 2,020
Financial instrument, interest rate 2.50%    
Term deposit, two[Member] | Bottom of range [member]        
Statement Line Items [Line Items]        
Financial instrument, maturity date April 8, 2019    
Term deposit, two[Member] | Top of range [member]        
Statement Line Items [Line Items]        
Financial instrument, maturity date March 12, 2020    
Treasury bills [Member]        
Statement Line Items [Line Items]        
Total Marketable securities $ 9,196    
Treasury bills [Member] | Bottom of range [member]        
Statement Line Items [Line Items]        
Financial instrument, interest rate 1.83%    
Financial instrument, maturity date April 2, 2019    
Treasury bills [Member] | Top of range [member]        
Statement Line Items [Line Items]        
Financial instrument, interest rate 1.90%    
Financial instrument, maturity date July 25, 2019