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Condensed Consolidated Statement of Changes In Deficit (USD $)
In Thousands, except Share data
Total
Common Shares
Additional Paid-in Capital
Treasury Shares
Accumulated Deficit
Beginning Balance at Dec. 31, 2013 $ (33,856) $ 141,477 $ 738,754 $ (217) $ (913,870)
Beginning Balance (in shares) at Dec. 31, 2013   172,691,063      
Exercise of stock options (in shares) 215,000 215,000      
Exercise of stock options 284 177 107    
Tax benefits from stock-based compensation 1   1    
Stock-based compensation 1,957   1,957    
Loss for the period (25,980)       (25,980)
Ending Balance at Mar. 31, 2014 $ (57,594) $ 141,654 $ 740,819 $ (217) $ (939,850)
Ending Balance (in shares) at Mar. 31, 2014   172,906,063