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Net Loss Per Share
 9 Months Ended
Sep. 30, 2014
Earnings Per Share [Abstract]  
Net Loss Per Share
12.   NET LOSS PER SHARE

The following table sets out the computation of basic and diluted net (loss) income per common share:

 

                                                                       
     Three months ended     Nine months ended  
     September 30,     September 30,  
(In thousands of U.S. dollars, except share and per share data)    2014     2013     2014     2013  
Numerator:         

Loss from continuing operations

    $ (4,926 )    $ (7,492 )    $ (19,969 )    $ (20,138 ) 

Income from discontinued operations, net of income taxes

      (6 )      96        (63 )      116   
                                  
Net loss    $ (4,932 )    $ (7,396 )    $ (20,032 )    $ (20,022 ) 
                                  
                                  
Denominator: (thousands)         

Weighted average common shares outstanding

      51,151        51,082        51,105        50,851   
Basic and diluted net loss per common share         
Continuing operations    $ (0.10 )    $ (0.15 )    $ (0.39 )    $ (0.40 ) 
Discontinued operations      (0.00 )      0.00        (0.00 )      0.00   
                                  
Net loss per common share    $ (0.10 )    $ (0.14 )    $ (0.39 )    $ (0.39 ) 
                                  
                                  

For the three and nine months ended September 30, 2014, 1,274,888 stock options and 42,000 RSUs (three and nine months ended September 30, 2013—1,074,348 stock options and nil RSUs) were excluded from the calculation of diluted net loss per common share because their effect was anti-dilutive.