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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (DEFICIT) (USD $)
In Thousands, except Share data
Total
Common Shares
Additional Paid-in Capital
Treasury shares
Retained earnings
Beginning Balance at Dec. 31, 2010 $ (202,367) $ 90,465 $ 206,718 $ (217) $ (499,333)
Beginning Balance (in shares) at Dec. 31, 2010   106,856,731      
Warrants exercised (in shares)   12,855,642      
Warrants exercised 18,661 10,263 8,398    
Transfer of fair value of warrants exercised from liabilities to equity 129,458   129,458    
Shares issued in January financing (in shares)   13,800,000      
Shares issued in January financing 98,654 10,723 87,931    
Stock options exercised (in shares)   2,255,721      
Stock options exercised 5,073 1,819 3,254    
Tax benefits from stock-based compensation 1,571   1,571    
Shares issued for services (in shares)   12,723      
Shares issued for services 57 10 47    
Share based compensation 6,022   6,022    
Loss for the period (87,464)       (87,464)
Ending Balance at Sep. 30, 2011 (30,335) 113,280 443,399 (217) (586,797)
Ending Balance (in shares) at Sep. 30, 2011   135,780,817      
Beginning Balance at Dec. 31, 2011 (5,962) 113,321 449,393 (217) (568,459)
Beginning Balance (in shares) at Dec. 31, 2011   135,832,542      
Warrants exercised (in shares) 10,881,276 10,881,276      
Warrants exercised 16,526 8,407 8,119    
Transfer of fair value of warrants exercised from liabilities to equity 103,885   103,885    
Conversion option of exchangeable notes 22,898   22,898    
Stock options exercised (in shares) 3,107,913 3,107,913      
Stock options exercised 7,834 2,439 5,395    
Tax benefits from stock-based compensation 10,106   10,106    
Vesting of restricted stock units (in shares)   97,398      
Vesting of restricted stock units 0 76 (76)    
Shares issued for services (in shares)   2,293      
Shares issued for services 24 1 23    
Share based compensation 13,344   13,344    
Loss for the period (168,617)       (168,617)
Ending Balance at Sep. 30, 2012 $ 38 $ 124,244 $ 613,087 $ (217) $ (737,076)
Ending Balance (in shares) at Sep. 30, 2012   149,921,422