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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 |  |
Reacquisition of conversion option in convertible notes | (10,100) |  | (10,100) |  |
Tax benefits realized from stock-based compensation | 1 |  | 1 |  |
Stock-based compensation | 4,351 |  | 4,351 |  |
Loss for the period | (10,657) |  |  |  | (10,657)
Ending Balance at Jun. 30, 2014 | $ (49,977) | $ 141,654 | $ 733,113 | $ (217) | $ (924,527)
Ending Balance (in shares) at Jun. 30, 2014 |  | 172,906,063 |  |  |

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