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

Note 9 - Intangible Assets - Components of Intangible Assets (Details)

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Note 9 - 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, 2018
Feb. 28, 2017
Feb. 29, 2016
Mar. 31, 2017
Mar. 31, 2017
Statement Line Items [Line Items]            
Balance $ 12,582 $ 12,388        
Balance 12,388 10,065 $ 12,582   $ 12,388 $ 12,388
Patents [member]            
Statement Line Items [Line Items]            
Balance        
Balance  
Licences [member]            
Statement Line Items [Line Items]            
Balance 12,582 12,388        
Balance 12,388 10,065 12,582   12,388 12,388
Gross carrying amount [member]            
Statement Line Items [Line Items]            
Balance   24,692   $ 24,608   24,608
Additions         84
Balance 24,692 24,692     24,692 24,692
Gross carrying amount [member] | Patents [member]            
Statement Line Items [Line Items]            
Balance   362   278   278
Additions         84
Balance 362 362     362 362
Gross carrying amount [member] | Licences [member]            
Statement Line Items [Line Items]            
Balance   24,330   24,330   24,330
Additions        
Balance 24,330 24,330     24,330 24,330
Accumulated depreciation, amortisation and impairment [member]            
Statement Line Items [Line Items]            
Balance 12,110 12,304 9,787 7,112 9,787 7,112
Balance 12,304 14,627 12,110 9,787 12,304 12,304
Amortization for the period 194 2,323 2,323 2,336 2,517  
Impairment loss       339    
Accumulated depreciation, amortisation and impairment [member] | Patents [member]            
Statement Line Items [Line Items]            
Balance 362 362 362 10 362 10
Balance 362 362 362 362 362 362
Amortization for the period 13  
Impairment loss       339    
Accumulated depreciation, amortisation and impairment [member] | Licences [member]            
Statement Line Items [Line Items]            
Balance 11,748 11,942 9,425 7,102 9,425 7,102
Balance 11,942 14,265 11,748 9,425 11,942 $ 11,942
Amortization for the period $ 194 $ 2,323 $ 2,323 2,323 $ 2,517  
Impairment loss