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Net Income (Loss) Per Common Share | 6 Months Ended
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Jun. 30, 2024
Earnings Per Share [Abstract] |
Net Income (Loss) Per Common Share | Net Loss Per Common Share The following table summarizes the computation of basic and diluted net loss per common share.
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2024 |  | 2023 |  | 2024 |  | 2023
Numerator: |  |  |  |  |  |  |
Net loss | $ | (2,203) |  |  | $ | (14,377) |  |  | $ | (14,740) |  |  | $ | (24,552) |
Adjustment for preferred stock cumulative dividends and deemed dividends | (3,843) |  |  | (3,196) |  |  | (7,513) |  |  | (6,247) |
Numerator for basic and diluted net loss per common share | $ | (6,046) |  |  | $ | (17,573) |  |  | $ | (22,253) |  |  | $ | (30,799) |
Denominator: |  |  |  |  |  |  |
Weighted average common shares outstanding | 49,940 |  |  | 46,309 |  |  | 49,214 |  |  | 45,085 |
Adjustment for participating securities | (2,622) |  |  | (2,826) |  |  | (3,038) |  |  | (1,790) |
Adjustment for warrants outstanding (1) | 1,521 |  |  | 2,874 |  |  | 2,105 |  |  | 2,541 |
Shares used to calculate basic and diluted net loss per share | 48,839 |  |  | 46,357 |  |  | 48,281 |  |  | 45,836 |
Basic and diluted net loss per common share | $ | (0.12) |  |  | $ | (0.38) |  |  | $ | (0.46) |  |  | $ | (0.67) |
Cash dividends declared per common share | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
_______________________________ (1) Outstanding warrants that are exercisable at an exercise price of $0.01 per share, are included in shares outstanding for calculation of basic earnings per share (see Note 15). The following table presents securities that could be potentially dilutive in the future that were excluded from the calculation of diluted net loss per common share because they had an anti-dilutive effect.
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2024 |  | 2023 |  | 2024 |  | 2023
Stock Options | 207 |  |  | 392 |  |  | 232 |  |  | 454 |
Warrants | 1,500 |  |  | 1,500 |  |  | 1,500 |  |  | 1,500 |
Performance share units | 820 |  |  | 14 |  |  | 783 |  |  | 7 |
Total antidilutive securities | 2,527 |  |  | 1,906 |  |  | 2,515 |  |  | 1,961 |
Stock options excluded from the calculations of diluted net loss per share have a per share exercise price ranging from $7.93 to $25.16 for the six months ended June 30, 2024. Warrants excluded from the calculation of diluted net loss per share have a per share exercise price of $11.03 (see Note 15). Performance share units are potentially dilutive when the related performance criterion has been met.

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