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

Note 13 - Capital and Other Components of Equity - Warrants Outstanding (Details)

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Note 13 - Capital and Other Components of Equity - Warrants Outstanding (Details) - CAD ($)
Mar. 31, 2018
Mar. 31, 2017
Feb. 28, 2017
Feb. 21, 2017
Feb. 29, 2016
Statement Line Items [Line Items]          
Warrants and rights outstanding       $ 144,000  
Series December 2017 US Broker warrants, liability portion [member]          
Statement Line Items [Line Items]          
Warrants (in shares) [1] 9,802,935  
Warrants and rights outstanding [1] $ 6,405,000  
Series 8 December 2013 Public offering warrants related to liability [member]          
Statement Line Items [Line Items]          
Warrants (in shares) [2] 18,400,000 18,400,000 18,400,000   18,400,000
Warrants and rights outstanding [2] $ 21,000 $ 209,000 $ 187,000   $ 156,000
Warrants relating to liabilities [member]          
Statement Line Items [Line Items]          
Warrants (in shares) 28,202,935 18,400,000 18,400,000   18,400,000
Warrants and rights outstanding $ 6,426,000 $ 209,000 $ 187,000   $ 156,000
Series December 2017 US Broker warrants, equity portion [member]          
Statement Line Items [Line Items]          
Warrants (in shares) [3] 495,050  
Warrants and rights outstanding [3] $ 406,000  
Series 2017-BW Broker warrants related to equity [member]          
Statement Line Items [Line Items]          
Warrants (in shares) [4] 234,992 234,992  
Warrants and rights outstanding [4] $ 144,000 $ 144,000  
Public offering warrants February 2017, equity portion [member]          
Statement Line Items [Line Items]          
Warrants (in shares) [5] 1,904,034 1,965,259 1,965,259  
Warrants and rights outstanding [5]  
The 2017 Unsecured convertible debenture conversion option and contingent warrant related to equity [member]          
Statement Line Items [Line Items]          
Warrants (in shares) [6] 1,052,630 1,052,630 1,052,630  
Warrants and rights outstanding [6] $ 309,000 $ 309,000 $ 309,000  
Series 9 Private Placement warrants 2013 related to equity [member]          
Statement Line Items [Line Items]          
Warrants (in shares) [7] 161,654 161,654 161,654   161,654
Warrants and rights outstanding [7]  
Warrants related to equity [member]          
Statement Line Items [Line Items]          
Warrants (in shares) 3,613,368 3,414,535 3,414,535   161,654
Warrants and rights outstanding $ 715,000 $ 453,000 $ 453,000  
[1] Warrant to acquire one Common Share of the Corporation at an exercise price of US$1.26, expiring on December 27, 2022.
[2] In order to obtain one Common Share of the Corporation at an exercise price of US$15.00, 10 warrants must be exercised. Warrants expire on December 3, 2018.
[3] Warrant to acquire one Common Share of the Corporation at an exercise price of $2.15, expiring on February 21, 2022.
[4] Warrant to acquire one Common Share of the Corporation at an excersise price of 2.15 expiring on February 21, 2018. 117,496 warrants amounted to $71 were exercised in November 2017 and 117,496 warrants expired on February 21, 2018.
[5] Warrant to acquire one Common Share of the Corporation at an exercise price of US$1.2625, expiring on December 27, 2022. 61,225 warrants amounted to $132 were exercised in November 2017.
[6] Warrant to acquire one Common Share of the Corporation at an exercise price of $1.90 expiring on February 21, 2020, net of deferred tax expense of $129.
[7] Warrant to acquire one Common Share of the Corporation at an exercise price of $13.30, expiring on December 3, 2018.