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Net Loss Per Share | 3 Months Ended
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Mar. 31, 2020
Earnings Per Share [Abstract] |
Net Loss Per Share | Net Loss Per ShareThe following outstanding potentially dilutive shares have been excluded from the calculation of diluted net loss per share for the period presented due to their anti-dilutive effect:
| March 31, |  |
| 2020 |  | 2019
Stock options to purchase common stock | 11,627,389 |  |  | 8,939,556 |
Restricted stock units subject to vesting | 2,534,671 |  |  | 1,102,028 |
Expected shares to be purchased under Employee Stock Purchase Plan | 226,459 |  |  | 265,455 |
Founder's shares of common stock subject to future vesting | 12,115,382 |  |  | 18,173,066 |
Early exercised stock options subject to future vesting | 2,678,501 |  |  | 5,020,580 |
Total | 29,182,402 |  |  | 33,500,685 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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