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Stockholders' Equity (Deficit) (Tables) | 12 Months Ended
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Dec. 31, 2016
Equity [Abstract] |
Schedule of reserved shares of common stock for issuance | As of December 31, 2016 and 2015, the Company had reserved shares of common stock for issuance as follows:
| December 31,
| 2016 |  | 2015
Stock options and restricted stock units issued and outstanding | 5,251,832 |  |  | 4,179,521 |
Stock options and restricted stock units available for grant under stock option plans | 887,724 |  |  | 1,058,359 |
Common stock available for the Employee Stock Purchase Plan | 609,053 |  |  | 750,000 |
Total | 6,748,609 |  |  | 5,987,880 |

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- Definition Tabular disclosure of number of common shares reserved for future issuance. + References No definition available. + Details
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