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Common Stock (Tables) | 3 Months Ended
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Mar. 31, 2020
Equity [Abstract] |
Schedule of Common Stock Reserved for Future Issuance | Shares of common stock reserved for future issuance, on an as-if converted basis, are as follows:
| March 31, 2020 |  | December 31, 2019
| (in thousands) |  |
Stock options issued and outstanding | 21,269 |  |  | 21,191 |
Remaining shares available for issuance under the 2019 Plan | 26,936 |  |  | 29,048 |
Outstanding and unsettled restricted stock units (RSUs) | 6,982 |  |  | 7,175 |
Shares available for issuance under the ESPP | 5,870 |  |  | 5,870 |
Total shares of common stock reserved | 61,057 |  |  | 63,284 |

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