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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Deficit [Member]
--- | --- | --- | --- | ---
Balance at Dec. 31, 2013 | $ (26,946) | $ 93 |  | $ 184,346 | $ (211,385)
Balance (in shares) at Dec. 31, 2013 |  | 93,551,098 |  |  |
Share-based compensation related to stock options | 467 |  |  | 467 |
Share-based compensation related to restricted stock award, net of forfeitures | 775 |  |  | 775 |
Share-based compensation related to restricted stock award, net of forfeitures (in shares) |  | (81,209) |  |  |
Exercise of options granted to employees | 46 | $ 1 |  | 45 |
Exercise of options granted to employees (in shares) |  | 133,930 |  |  |
Net loss from continuing operations | (33,298) |  |  |  | (33,298)
Net income (loss) from discontinued operations | 3,355 |  |  |  | 3,355
Balance at Dec. 31, 2014 | (55,601) | $ 94 |  | 185,633 | (241,328)
Balance (in shares) at Dec. 31, 2014 |  | 93,603,819 |  |  |
Issuance of common stock | 6,101 | $ 6 |  | 6,095 |
Issuance of common stock (in shares) |  | 5,649,079 |  |  |
Share-based compensation related to stock options | 1,273 |  |  | 1,273 |
Share-based compensation related to restricted stock award, net of forfeitures | 529 |  |  | 529 |
Share-based compensation related to restricted stock award, net of forfeitures (in shares) |  | (2,501) |  |  |
Exercise of options granted to employees | 534 |  | [1] | 534 |
Exercise of options granted to employees (in shares) |  | 550,000 |  |  |
Net loss from continuing operations | (27,282) |  |  |  | (27,282)
Net income (loss) from discontinued operations | 85,319 |  |  |  | 85,319
Balance at Dec. 31, 2015 | 10,873 | $ 100 |  | 194,064 | (183,291)
Balance (in shares) at Dec. 31, 2015 |  | 99,800,397 |  |  |
Issuance of common stock | 6,848 | $ 24 |  | 6,824 |
Issuance of common stock (in shares) |  | 23,846,735 |  |  |
Equity component of convertible notes | 685 |  |  | 685 |
Share-based compensation related to stock options | 920 |  |  | 920 |
Share-based compensation related to restricted stock award, net of forfeitures | 68 |  | [1] | 68 |
Share-based compensation related to restricted stock award, net of forfeitures (in shares) |  | 7,843 |  |  |
Exercise of options granted to employees | 14 |  | [1] | 14 |
Exercise of options granted to employees (in shares) |  | 479,110 |  |  |
Net loss from continuing operations | (29,176) |  |  |  | (29,176)
Net income (loss) from discontinued operations | (189) |  |  |  | (189)
Balance at Dec. 31, 2016 | $ (9,957) | $ 124 |  | $ 202,575 | $ (212,656)
Balance (in shares) at Dec. 31, 2016 |  | 124,134,085 |  |  |
[1] | Represents an amount of less than $1.

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