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Net Loss per Share | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Net Loss per Share | Net Loss per ShareThe following common stock equivalents outstanding at the end of the periods presented were excluded from the calculation of diluted net loss per share for the periods indicated because including them would have had an anti-dilutive effect:
| As of December 31,
| 2021 |  | 2020 |  |
| (In thousands)
Stock options | 13,288 |  |  | 10,432 |  |  |
Restricted stock units | 2,126 |  |  | 540 |  |  |
ESPP | 148 |  |  | 26 |  |  |
| 15,562 |  |  | 10,998 |  |  |

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