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Capital Stock
 6 Months Ended
Jun. 30, 2011
Capital Stock  
Capital Stock
10.           Capital Stock

   
Number of shares issued
  
Common stock
 
As of December 31, 2010
  61,919,752  $349,719 
          
Exercise of employee stock options - cash
  64,742   118 
Exercise of employee stock options - fair value - Note 11
  -   78 
          
Issued during the three months ended March 31, 2011
  64,742   196 
          
As of March 31, 2011
  61,984,494  $349,915 
          
Exercise of employee stock options - cash
  134,742   324 
Exercise of employee stock options - fair value - Note 11
  -   146 
Exercise of October 22, 2010 warrants - cash
  13,677   48 
Exercise of October 22, 2010 warrants - fair value - Note 12
  -   15 
April 20, 2011 equity financing
  9,000,000   28,400 
          
Issued during the three months ended June 30, 2011
  9,148,419   28,933 
          
As of June 30, 2011
  71,132,913  $378,848 

On April 20, 2011, GMP Securities L.P. and Wellington West Capital Markets Inc. (the “Underwriters”) purchased 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 $28,988.  Also, in connection with the Offering, we issued 450,000 compensation options to the Underwriters with a fair value of $588 (see Note 12).  Net proceeds after the issuance of the compensation options were $28,400.  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.