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Condensed Consolidated Statements of Changes in Stockholders' Equity - 9 months ended Sep. 30, 2015 - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Other Comprehensive Income [Member] | Accumulated Deficit (Earnings) [Member]
--- | --- | --- | --- | --- | ---
Balance at the beginning of the period at Dec. 31, 2014 | $ 9,773 | $ 1 | $ 98,133 | $ 469 | $ (88,830)
Balance at the beginning of the period (in shares) at Dec. 31, 2014 |  | 9,424 |  |  |
Issuance of common stock under employee stock option and stock purchase plans | 255 |  | 255 |  |
Issuance of common stock under employee stock option and stock purchase plans (in shares) |  | 65 |  |  |
Issuance of common stock under registered follow-on offering, net | 23,576 |  | 23,576 |  |
Issuance of common stock under registered follow-on offering, net (in shares) |  | 1,500 |  |  |
Stock-based compensation | 474 |  | 474 |  |
Issuance of common stock upon the exercise of warrants | 2,503 |  | 2,503 |  |
Issuance of common stock upon the exercise of warrants (in shares) |  | 638 |  |  |
Foreign currency translation adjustment | (469) |  |  | (469) |
Loss from discontinued operations | (318) |  |  |  | (318)
Income (loss) from continuing operations | 7,814 |  |  |  | 7,814
Balance at the end of the period at Sep. 30, 2015 | $ 43,608 | $ 1 | $ 124,941 | $ 0 | $ (81,334)
Balance at the end of the period (in shares) at Sep. 30, 2015 |  | 11,627 |  |  |

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