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Capital Stock
9 Months Ended
Sep. 30, 2011
Capital Stock [Abstract] 
Capital Stock
11.           Capital Stock
 
   
Number of shares
issued
  
Common stock
 
As of December 31, 2010
  61,919,752  $349,719 
          
Exercises of employee stock options - cash
  64,742   118 
Exercises of employee stock options - fair value - Note 12
  -   78 
Issued during the three months ended March 31, 2011
  64,742   196 
As of March 31, 2011
  61,984,494  $349,915 
          
Exercises of employee stock options - cash
  134,742   324 
Exercises of employee stock options - fair value - Note 12
  -   146 
Exercises of October 22, 2010 warrants - cash
  13,677   48 
Exercises of October 22, 2010 warrants - fair value - Note 13
  -   15 
April 20, 2011 equity financing
  9,000,000   28,396 
Issued during the three months ended June 30, 2011
  9,148,419   28,929 
As of June 30, 2011
  71,132,913  $378,844 
          
Exercises of employee stock options - cash
  87,500   264 
Exercises of employee stock options - fair value - Note 12
  -   125 
Exercises of restricted stock units - fair value - Note 12
  140,905   392 
Cash paid in lieu of capital stock issuances  -   (107)
Exercises of October 22, 2010 warrants - cash
  74,565   261 
Exercises of October 22, 2010 warrants - fair value - Note 13
  -   82 
Issued during the three months ended September 30, 2011
  302,970   1,017 
As of September 30, 2011
  71,435,883  $379,861 

On April 20, 2011, GMP Securities L.P. and Wellington West Capital Markets Inc. (collectively, the “Underwriters”) purchased, on a bought deal basis, 9,000,000 of our common shares at a price of Cdn$3.30 ($3.43 based on the exchange rate on April 20, 2011) per common share (the “Issue Price”) for aggregate gross proceeds of Cdn$29,700 ($30,870 based on the exchange rate on April 20, 2011) (the “Offering”).  Net cash proceeds after legal and regulatory fees were $28,984.  Also, in connection with the Offering, we issued 450,000 compensation options to the Underwriters with a fair value of $588 (see Note 13).  The common shares were sold by way of a prospectus supplement to our existing base shelf prospectus dated April 27, 2009 and filed with the securities commissions in all of the provinces and territories of Canada (other than the Province of Québec) and in the United States by way of a prospectus supplement to our base shelf prospectus included in our shelf registration statement filed with the SEC on April 28, 2009.  On May 20, 2011, an over-allotment option expired unexercised.