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Consolidated Statements of Shareholders' Equity (USD $) | Common stock | Additional paid-in capital | Accumulated other comprehensive loss | Accumulated deficit | Total
--- | --- | --- | --- | --- | ---
Beginning balances at Dec. 31, 2011 | $ 17,000 | $ 425,658,000 | $ (35,000) | $ (414,838,000) | $ 10,802,000
Beginning balances, shares at Dec. 31, 2011 | 17,019,000 |  |  |  |
Share-based compensation expense | 0 | 2,286,000 | 0 | 0 | 2,286,000
Share-based compensation expense, shares | 648,000 |  |  |  |
Exercise of warrants and options | 0 | 23,000 | 0 | 0 | 23,000
Exercise of warrants and options, shares | 16,000 |  |  |  |
Sales of common stock and warrants | 8,000 | 14,593,000 | 0 | 0 | 14,601,000
Sales of common stock and warrants, shares | 7,554,000 |  |  |  |
Other comprehensive income (loss) | 0 | 0 | 35,000 | 0 | 35,000
Net loss | 0 | 0 | 0 | (22,693,000) | (22,693,000)
Ending balances at Dec. 31, 2012 | 25,000 | 442,560,000 | 0 | (437,531,000) | 5,054,000
Ending balances, shares at Dec. 31, 2012 | 25,237,000 |  |  |  |
Share-based compensation expense | 0 | 1,589,000 | 0 | 0 | 1,589,000
Share-based compensation expense, shares | 323,000 |  |  |  |
Exercise of warrants and options | 0 | 41,000 | 0 | 0 | 41,000
Exercise of warrants and options, shares | 23,000 |  |  |  |
Sales of common stock and warrants | 7,000 | 4,255,000 | 0 | 0 | 4,262,000
Sales of common stock and warrants, shares | 6,128,000 |  |  |  |
Exchange of warrants | 0 | 536,000 | 0 | 0 | 536,000
Exchange of warrants, shares | 358,000 |  |  |  |
Net loss | 0 | 0 | 0 | (13,178,000) | (13,178,000)
Ending balances at Dec. 31, 2013 | $ 32,000 | $ 448,981,000 | $ 0 | $ (450,709,000) | $ (1,696,000)
Ending balances, shares at Dec. 31, 2013 | 32,069,000 |  |  |  |

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