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Stockholders' Equity (Deficit) (Tables) | 12 Months Ended
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Dec. 31, 2017
Class Of Stock Disclosures [Abstract] |
Schedule of Common Stock Reserved for Future Issuance | The following common stock is reserved for future issuance at December 31, 2017 and December 31, 2016:
|  | As of December 31, |
|  | 2017 (1) |  |  | 2016 |
Warrants issued and outstanding |  |  | 51,003 |  |  |  | 51,003 |
Stock option awards issued and outstanding |  |  | 1,203,627 |  |  |  | 1,040,387 |
Authorized for grants under the 2016 Equity Incentive Plan |  |  | 633,052 |  |  |  | 709,750 |
Authorized for grants under the 2016 Employee Stock Purchase Plan |  |  | 100,000 |  |  |  | 100,000 |
|  |  | 1,987,682 |  |  |  | 1,901,140 |
(1) | Treasury stock in the amount of 135,000 are excluded from the table above.

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