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Net Income (Loss) Per Share | 9 Months Ended
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Sep. 30, 2022
Earnings Per Share [Abstract] |
Net Income (Loss) Per Share | Net Income (Loss) Per Share The table below provides a reconciliation of the numerators and denominators of basic and diluted net income (loss) per share for the three and nine months ended September 30, 2022 and 2021 (in thousands, except per share amounts):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2022 |  | 2021 |  | 2022 |  | 2021 |  |
Numerators: |  |  |  |  |  |  |  |  |
Net income (loss) | $ | 2,143 |  |  | $ | (13,042) |  |  | $ | (12,425) |  |  | $ | (44,123) |  |  |
Less: Income attributable to unvested restricted stock awards | (41) |  |  | — |  |  | — |  |  | — |  |  |
Numerator for basic net income (loss) per share | 2,102 |  |  | (13,042) |  |  | (12,425) |  |  | (44,123) |  |  |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |
Unvested restricted stock awards | 3 |  |  | — |  |  | — |  |  | — |  |  |
Numerator for diluted net income (loss) per share | $ | 2,105 |  |  | $ | (13,042) |  |  | $ | (12,425) |  |  | $ | (44,123) |  |  |
Denominators: |  |  |  |  |  |  |  |  |
Weighted average number of common shares outstanding | 63,896 |  |  | 61,378 |  |  | 62,490 |  |  | 61,294 |  |  |
Less: Weighted average number of unvested restricted stock awards outstanding | (1,222) |  |  | (1,001) |  |  | (1,198) |  |  | (1,030) |  |  |
Denominator for basic net income (loss) per share | 62,674 |  |  | 60,377 |  |  | 61,292 |  |  | 60,264 |  |  |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |
Unvested restricted stock awards | 2 |  |  | — |  |  | — |  |  | — |  |  |
Denominator for diluted net income (loss) per share | 62,676 |  |  | 60,377 |  |  | 61,292 |  |  | 60,264 |  |  |
Net income (loss) per share: |  |  |  |  |  |  |  |  |
Basic | $ | 0.03 |  |  | $ | (0.22) |  |  | $ | (0.20) |  |  | $ | (0.73) |  |  |
Diluted | 0.03 |  |  | (0.22) |  |  | (0.20) |  |  | (0.73) |  |  |
The calculation of diluted net income (loss) per share for the three and nine months ended September 30, 2022 excluded 249 thousand shares and 287 thousand shares, respectively, issuable pursuant to outstanding stock options, due to their antidilutive effect. The calculation of diluted net loss per share for the three and nine months ended September 30, 2021 excluded 394 thousand shares and 444 thousand shares, respectively, issuable pursuant to outstanding stock options, due to their antidilutive effect. Additionally, shares issuable upon conversion of both the 2023 Notes and the 2026 Notes were excluded from the calculation of diluted net income (loss) per share for the three and nine months ended September 30, 2022 and 2021 due to, among other factors, the Company's share price.

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