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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2022
Class of Stock Disclosures [Abstract] |
Schedule of Common Stock Reserved for Future Issuance | The following common stock is reserved for future issuance(1) (in thousands):
|  | As of December 31, |
|  | 2022 |  |  | 2021 |
Stock options issued and outstanding |  |  | 2,065 |  |  |  | 2,000 |
Stock awards issued and outstanding |  |  | 581 |  |  |  | — |
Authorized for grants under the 2016 Equity Incentive Plan(2) |  |  | 507 |  |  |  | 332 |
Authorized for grants under the Inducement Plan(3) |  |  | 294 |  |  |  | 81 |
Authorized for grants under the 2016 Employee Stock Purchase Plan(4) |  |  | 378 |  |  |  | 326 |
|  |  | 3,825 |  |  |  | 2,739 |
(1) Treasury stock of 541,000 shares as of December 31, 2022 and 2021 are excluded from the table above. (2) On January 1, 2022, the number of authorized shares in the 2016 Plan increased by 404,000 shares pursuant to the evergreen provisions of the 2016 Equity Incentive Plan. (3) On February 5, 2021, 300,000 shares were authorized pursuant to the terms of the Inducement Plan. 227,300 shares were issued under the Inducement Plan during the year ended December 31, 2022. (4) On January 1, 2022, the number of authorized shares in the 2016 Employee Stock Purchase Plan increased by 100,000 shares pursuant to the evergreen provisions of the 2016 Employee Stock Purchase Plan.

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