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Basic and Diluted Loss per Common Share | 12 Months Ended
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Dec. 31, 2022
Earnings Per Share [Abstract] |
Basic and Diluted Loss per Common Share | 13. Basic and Diluted Loss per Common Share The following table sets forth the computation of basic and diluted net loss per share for the years ended December 31, 2022, 2021, and 2020 (in thousands, except share and per share data):
| Year Ended December 31,
| 2022 |  | 2021 |  | 2020
Numerator: |  |  |  |  |
Net loss | $ | (150,920) |  |  | $ | (88,641) |  |  | $ | (33,477) |
Denominator: |  |  |  |  |
Weighted average common shares outstanding, basic and diluted | 72,455,175 |  |  | 71,036,490 |  |  | 69,050,565 |
Net loss per share, basic and diluted | $ | (2.08) |  |  | $ | (1.25) |  |  | $ | (0.48) |
Due to net losses for the years ended December 31, 2022, 2021, and 2020, basic and diluted net loss per share were the same as the effect of potentially dilutive securities would have been antidilutive. The following outstanding securities, prior to the use of the treasury stock method, have been excluded from the computation of diluted weighted-average shares outstanding for the respective periods below because they would have been antidilutive to earnings per share:
| Year Ended December 31,
| 2022 |  | 2021 |  | 2020
Stock options | 2,697,959 |  |  | 2,953,356 |  |  | 3,399,240 |
Non-vested restricted stock units | 1,190,720 |  |  | 1,209,529 |  |  | 1,165,003 |

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