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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Summary of Significant Accounting Policies |
Schedule of the Company's net loss per share | The Company’s computation of net (loss) income per share is as follows (in thousands, except per share amounts):
|  |  |  |  | As of |
|  |  |  |  | December 31, |
|  |  | 2018 |  |  | 2017 |  |  | 2016 |
Numerator: |  |  |  |  |  |  |  |  |  |
Net (loss) income - basic |  | $ | (12,951) |  | $ | (92) |  | $ | 4,522 |
Denominator: |  |  |  |  |  |  |  |  |  |
Weighted average number of common shares outstanding - basic |  |  | 35,317 |  |  | 34,381 |  |  | 32,928 |
Common stock equivalents from outstanding common stock options |  |  | - |  |  | - |  |  | 3,514 |
Common stock equivalents for ESPP |  |  | - |  |  | - |  |  | 16 |
Common stock equivalents from outstanding common stock warrants |  |  | - |  |  | - |  |  | 1 |
Weighted average number of common shares outstanding - diluted |  |  | 35,317 |  |  | 34,381 |  |  | 36,459 |
Basic net (loss) income per share |  | $ | (0.37) |  | $ | (0.00) |  | $ | 0.14 |
Diluted net (loss) income per share |  | $ | (0.37) |  | $ | (0.00) |  | $ | 0.12 |
Schedule of potentially dilutive securities not included in the calculation of diluted net loss per share attributable to common stockholders | Potentially dilutive securities not included in the calculation of diluted net (loss) income per share because to do so would be anti‑dilutive were as follows (in common stock equivalent shares, in thousands):
|  |  | As of |
|  |  | December 31, |
|  |  | 2018 |  |  | 2017 |  |  | 2016 |
Stock options outstanding |  |  | 5,614 |  |  | 5,516 |  |  | 1,099 |
Unvested restricted stock units |  |  | 244 |  |  | 173 |  |  | — |
Employee stock purchase plan |  |  | 3 |  |  | 28 |  |  | — |
|  |  | 5,861 |  |  | 5,717 |  |  | 1,099 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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