Annual reports filed by certain Canadian issuers pursuant to Section 15(d) and Rule 15d-4

Shareholders' equity and capital stock (Details 5)

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Shareholders' equity and capital stock (Details 5) (CAD)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Number of unvested options 826,425 276,365 0
Weighted- average remaining amortization life (years) 1 year 3 months 26 days    
Aggregate Intrinsic Value 685,933    
Grant Date One [Member]
     
Grant date Jan. 28, 2011    
Number of unvested options 133,147    
Weighted- average remaining amortization life (years) 9 months 18 days    
Aggregate Intrinsic Value 110,512    
Grant Date Two [Member]
     
Grant date Jan. 12, 2012    
Number of unvested options 288,618    
Weighted- average remaining amortization life (years) 1 year 11 days    
Aggregate Intrinsic Value 239,553    
Grant Date Three [Member]
     
Grant date Dec. 07, 2012    
Number of unvested options 404,660    
Weighted- average remaining amortization life (years) 1 year 11 months 5 days    
Aggregate Intrinsic Value 335,868