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Net Loss Per Share | 12 Months Ended
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Dec. 31, 2022
Earnings Per Share [Abstract] |
Net Loss Per Share | 12. Net Loss Per Share Potential common shares that would have the effect of increasing diluted earnings per share are considered to be anti-dilutive and as such, these shares are not included in the calculation of diluted earnings per share. The Company reported a net loss for each of the years ended December 31, 2022, 2021 and 2020. Therefore, dilutive common shares are not assumed to have been issued since their effect is anti-dilutive for these periods. Diluted weighted average shares excluded the following potential common shares related to stock options, RSUs, PRSUs and TSR awards, and shares to be purchased under the 2014 Employee Stock Purchase Plan (“ESPP”) for the periods presented as they were anti-dilutive (in thousands):
|  | Years Ended December 31, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
Employee stock options |  |  | 9,520 |  |  |  | 8,461 |  |  |  | 6,694 |
RSUs, PRSUs and TSR awards |  |  | 2,137 |  |  |  | 1,538 |  |  |  | 564 |
ESPP |  |  | 305 |  |  |  | 417 |  |  |  | 306 |
|  |  | 11,962 |  |  |  | 10,416 |  |  |  | 7,564 |

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