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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands | Total | Preferred Stock | Common Stock | Additional Paid-In Capital | Accumulated Deficit | Patel vs Galena biopharma, Inc | Patel vs Galena biopharma, Inc Common Stock | Patel vs Galena biopharma, Inc Additional Paid-In Capital | Secured Debt | Secured Debt Common Stock | Secured Debt Additional Paid-In Capital | Convertible Preferred Stock | Convertible Preferred Stock Preferred Stock | Convertible Preferred Stock Common Stock | Convertible Preferred Stock Additional Paid-In Capital | Convertible Notes Payable | Convertible Notes Payable Common Stock | Convertible Notes Payable Additional Paid-In Capital
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Beginning balance (in shares) at Dec. 31, 2017 |  | 0 | 5,766,891 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2017 | $ 2,070 | $ 0 | $ 1 | $ 56,254 | $ (54,185) |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of Stock (in shares) |  | 10,700 | 6,845,000 |  |  |  | 228,672 |  |  | 715,277 |  |  |  |  |  |  |  |
Issuance of Series A convertible preferred stock, net of offering costs | 9,647 |  |  | 9,647 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of stock, amount | 21,564 |  | $ 1 | 21,563 |  | $ 1,250 |  | $ 1,250 | $ 2,896 |  | $ 2,896 |  |  |  |  |  |  |
Fair value of liability-classified warrants issued in connection with Series A convertible preferred stock offering | (5,039) |  |  | (5,039) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beneficial conversion feature arising from Series A convertible preferred stock | (4,436) |  |  | (4,436) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deemed dividend arising from beneficial conversion feature of Series A convertible preferred stock | 4,436 |  |  | 4,436 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock (in shares) |  | 2,898 | 499,682 |  |  |  |  |  |  |  |  |  | (7,802) | 3,748,184 |  |  | 118,644 |
Convertible preferred stock dividends | (487) |  |  | (487) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock as result of conversion |  |  |  |  |  |  |  |  |  |  |  | $ (8,654) |  |  | $ (8,654) | $ 825 |  | $ 825
Deemed dividend arising from the issuance of common stock to Series A convertible preferred stockholders under most favored nation provision | 8,654 |  |  | 8,654 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impact of anti-dilution protection on liability-classified warrants | (491) |  |  | (491) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock in connection with warrant exchange agreements (in shares) |  |  | 54,343 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock in connection with warrant exchange agreements | 285 |  |  | 285 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock upon exercise of pre-funded warrants |  |  | 2,524,783 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation | 284 |  |  | 284 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (14,347) |  |  |  | (14,347) |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance (in shares) at Sep. 30, 2018 |  | 0 | 20,501,476 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance at Sep. 30, 2018 | $ 18,457 | $ 0 | $ 2 | $ 86,987 | $ (68,532) |  |  |  |  |  |  |  |  |  |  |  |  |

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