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Condensed Consolidated Statements of Stockholders' Deficit (Unaudited) - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands | Total | Common Stock Issued [Member] | Treasury Stock [Member] | Additional Paid in Capital [Member] | Accumulated Deficit [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 | $ 678 | $ 3 | $ (51) | $ 325,516 | $ (324,832) | $ 42
Balance (in shares) at Dec. 31, 2017 |  | 263,275 | (1) |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Compensation income for issuance of stock options | (40) |  |  | (40) |  |
Compensation expense for issuance of restricted stock | 35 | $ 1 |  | 34 |  |
Compensation expense for issuance of restricted stock (in shares) |  | 60,000 |  |  |  |
Sale of common stock, net of expenses | 11,277 | $ 53 |  | 11,224 |  |
Sale of common stock, net of expenses (in shares) |  | 5,336,665 |  |  |  |
Cashless exercise of warrants (in shares) |  | 34,497 |  |  |  |
Issuance of pre-funded warrants | 520 |  |  | 520 |  |
Fair value of warrants issued in Feb 2018 public offering | (18,306) |  |  | (18,306) |  |
Fair value of warrants issued with Convertible Notes | 5,007 |  |  | 5,007 |  |
Fair value of warrants reclassified from liability to equity | 4,210 |  |  | 4,210 |  |
Beneficial conversion feature of convertible note | 44 |  |  | 44 |  |
Net loss | (8,353) |  |  |  | (8,353) |
Total comprehensive loss | 63 |  |  |  |  | 63
Balance at Sep. 30, 2018 | $ (4,865) | $ 57 | $ (51) | $ 328,209 | $ (333,185) | $ 105
Balance (in shares) at Sep. 30, 2018 |  | 5,694,437 | (1) |  |  |

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