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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN (DEFICIT) EQUITY (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) 10,330,642 10,330,642      
Warrants exercised 14,930 8,289 6,641    
Transfer of fair value of warrants exercised from liabilities to equity 108,458   108,458    
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) 2,164,647 2,164,647      
Stock options exercised 4,954 1,745 3,209    
Tax benefits from stock-based compensation 1,061   1,061    
Shares issued for services (in shares)   11,810      
Shares issued for services 44 9 35    
Share based compensation 3,360   3,360    
Income for the period (183,809)       (183,809)
Ending Balance at Jun. 30, 2011 (154,715) 111,231 417,413 (217) (683,142)
Ending Balance (in shares) at Jun. 30, 2011   133,163,830      
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) 9,812,622 9,812,622      
Warrants exercised 14,930 7,569 7,361    
Transfer of fair value of warrants exercised from liabilities to equity 92,282   92,282    
Conversion option of exchangeable notes 22,898   22,898    
Stock options exercised (in shares) 2,485,647 2,485,647      
Stock options exercised 6,678 1,953 4,725    
Tax benefits from stock-based compensation 7,960   7,960    
Shares issued for services (in shares)   1,742      
Shares issued for services 14 1 13    
Share based compensation 8,709   8,709    
Income for the period (142,189)       (142,189)
Ending Balance at Jun. 30, 2012 $ 5,320 $ 122,844 $ 593,341 $ (217) $ (710,648)
Ending Balance (in shares) at Jun. 30, 2012   148,132,553