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

Note 10 - Intangible Assets - Components of Intangible Assets (Details)

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Note 10 - Intangible Assets - Components of Intangible Assets (Details) - CAD ($)
$ in Thousands
1 Months Ended 12 Months Ended 13 Months Ended 25 Months Ended
Mar. 31, 2017
Mar. 31, 2019
Mar. 31, 2018
Feb. 28, 2017
Mar. 31, 2017
Mar. 31, 2018
Statement Line Items [Line Items]            
Balance   $ 10,065        
Balance   7,743 $ 10,065     $ 10,065
Patents [member]            
Statement Line Items [Line Items]            
Balance          
Balance      
Licences [member]            
Statement Line Items [Line Items]            
Balance   10,065        
Balance   7,743 10,065     10,065
Gross carrying amount [member]            
Statement Line Items [Line Items]            
Balance   24,692   $ 24,692 $ 24,692 24,692
Additions        
Balance   24,692 24,692     24,692
Gross carrying amount [member] | Patents [member]            
Statement Line Items [Line Items]            
Balance   362   362 362 362
Additions        
Balance   362 362     362
Gross carrying amount [member] | Licences [member]            
Statement Line Items [Line Items]            
Balance   24,330   24,330 24,330 24,330
Additions        
Balance   24,330 24,330     24,330
Accumulated depreciation, amortisation and impairment [member]            
Statement Line Items [Line Items]            
Balance $ 12,110 14,627 12,304 9,787 9,787 9,787
Balance 12,304 16,949 14,627 12,110 12,304 14,627
Amortization for the period 194 2,322 2,323 2,323 2,517  
Accumulated depreciation, amortisation and impairment [member] | Patents [member]            
Statement Line Items [Line Items]            
Balance 362 362 362 362 362 362
Balance 362 362 362 362 362 362
Amortization for the period  
Accumulated depreciation, amortisation and impairment [member] | Licences [member]            
Statement Line Items [Line Items]            
Balance 11,748 14,265 11,942 9,425 9,425 9,425
Balance 11,942 16,587 14,265 11,748 11,942 $ 14,265
Amortization for the period $ 194 $ 2,322 $ 2,323 $ 2,323 $ 2,517