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CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (CAPITAL DEFICIENCY) (USD $) In Thousands, except Share data | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Deficit [Member]
--- | --- | --- | --- | ---
Balance at Dec. 31, 2009 | $ 15,883 | $ 81 | $ 122,252 | $ (106,450)
Balance, shares at Dec. 31, 2009 |  | 80,841,237 |  |
Share-based compensation | 1,282 |  | 1,282 |
Exercise of options granted to employees and non-employees | 510 |  | 510 |
Exercised |  | 407,235 |  |
Net Loss | (28,998) |  |  | (28,998)
Balance at Dec. 31, 2010 | (11,323) | 81 | 124,044 | (135,448)
Balance, shares at Dec. 31, 2010 |  | 81,248,472 |  |
Common stock issued for cash (net of issuance costs) (in shares) |  | 4,000,000 |  |
Common stock issued for cash (net of issuance costs) | 20,590 | 4 | 20,586 |
Share-based compensation | 886 |  | 886 |
Exercise of options granted to employees and non-employees | 299 | 1 | 298 |
Exercised |  | 381,685 |  |
Net Loss | (36,529) |  |  | (36,529)
Balance at Dec. 31, 2011 | (26,077) | 86 | 145,814 | (171,977)
Balance, shares at Dec. 31, 2011 |  | 85,630,157 |  |
Common stock issued for cash (net of issuance costs) (in shares) |  | 5,175,000 |  |
Common stock issued for cash (net of issuance costs) | 25,388 | 5 | 25,383 |
Share-based compensation | 4,612 |  | 4,612 |
Share-based compensation related to restricted stock award, net of forfeitures | 3,139 | 1 | 3,138 |
Share-based compensation related to restricted stock award, net of forfeitures (shares) |  | 1,496,792 |  |
Exercise of options granted to employees and non-employees | 1,199 | 1 | 1,198 |
Exercised |  | 1,187,860 |  |
Net Loss | (11,618) |  |  | (11,618)
Balance at Dec. 31, 2012 | $ (3,357) | $ 93 | $ 180,145 | $ (183,595)
Balance, shares at Dec. 31, 2012 |  | 93,489,809 |  |

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