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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands | Total | Common Stock | Preferred stock | 2017 Bridge Notes | Senior and Junior Notes | Preferred stock | Preferred stock Preferred stock | Preferred stock Senior and Junior Notes | Common Stock | Common Stock Common Stock | Common Stock 2017 Bridge Notes | Common Stock Senior and Junior Notes | Additional Paid-in Capital | Additional Paid-in Capital Common Stock | Additional Paid-in Capital Preferred stock | Additional Paid-in Capital 2017 Bridge Notes | Additional Paid-in Capital Senior and Junior Notes | Accumulated Deficit
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at beginning of period at Dec. 31, 2016 | $ (6,460) |  |  |  |  | $ 8 |  |  | $ 4 |  |  |  | $ 4,376 |  |  |  |  | $ (10,848)
Balance at beginning of period (in shares) at Dec. 31, 2016 |  |  |  |  |  | 780,105 |  |  | 449,175 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (10,719) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (10,719)
Conversion of warrants into stock |  |  | $ 25 |  |  |  |  |  |  | $ 20 |  |  |  | $ (20) | $ 25 |  |  |
Conversion of warrants into stock (in shares) |  |  |  |  |  |  | 8,542 |  |  | 1,958,166 |  |  |  |  |  |  |  |
Shares converted, value | 0 |  |  |  |  | $ (25) |  |  | $ 34 |  |  |  | (9) |  |  |  |  |
Conversion of preferred stock into common stock (in shares) |  | (943,600) |  |  |  | (2,526,425) |  |  | 3,467,666 |  |  |  |  |  |  |  |  |
Conversion of debt into stock |  |  |  | $ 2,738 | $ 4,771 |  |  | $ 8 |  |  | $ 6 | $ 14 |  |  |  | $ 2,732 | $ 4,749 |
Conversion of debt into stock (in shares) |  |  |  |  |  |  |  | 802,920 |  |  | 515,638 | 1,414,700 |  |  |  |  |  |
Issuance of common stock for consulting services in connection with the merger | 2,189 |  |  |  |  |  |  |  | $ 3 |  |  |  | 2,186 |  |  |  |  |
Issuance of common stock for consulting services in connection with the merger (in shares) |  |  |  |  |  |  |  |  | 321,821 |  |  |  |  |  |  |  |  |
Shares issued in connection with business combination | 20,098 |  |  |  |  | $ 8 |  |  | $ 12 |  |  |  | 20,078 |  |  |  |  |
Shares issued in connection with business combination (in shares) |  |  |  |  |  | 802,925 |  |  | 1,255,119 |  |  |  |  |  |  |  |  |
Issuance of preferred stock | 5,380 |  |  |  |  | $ 1 |  |  |  |  |  |  | 5,379 |  |  |  |  |
Issuance of preferred stock (in shares) |  |  |  |  |  | 135,574 |  |  |  |  |  |  |  |  |  |  |  |
Issuance of warrants in conjunction with issuance of side agreement | 487 |  |  |  |  |  |  |  |  |  |  |  | 487 |  |  |  |  |
Beneficial conversion feature on issuance of bridge notes | 1,856 |  |  |  |  |  |  |  |  |  |  |  | 1,856 |  |  |  |  |
Non-cash stock-based compensation and vesting of restricted units | 41 |  |  |  |  |  |  |  | $ 1 |  |  |  | 40 |  |  |  |  |
Non-cash stock-based compensation and vesting of restricted units (in shares) |  |  |  |  |  |  |  |  | 64,593 |  |  |  |  |  |  |  |  |
Balance at end of period at Sep. 30, 2017 | $ 20,406 |  |  |  |  | $ 0 |  |  | $ 94 |  |  |  | $ 41,879 |  |  |  |  | $ (21,567)
Balance at end of period (in shares) at Sep. 30, 2017 |  |  |  |  |  | 3,641 |  |  | 9,446,878 |  |  |  |  |  |  |  |  |

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