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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2022
Accounting Policies [Abstract] |
Summary of Product Revenue by Geographical Locations of Customers | Product revenue by geographical locations of customers during the years ended December 31, 2022, 2021 and 2020, was as follows (in thousands):
|  | Year Ended December 31, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
Product revenue: |  |  |  |  |  |  |  |  |
North America |  | $ | 103,978 |  |  | $ | 68,968 |  |  | $ | 32,380 |
Europe, Middle East and Africa |  |  | 56,297 |  |  |  | 60,124 |  |  |  | 57,427 |
Other |  |  | 1,773 |  |  |  | 1,767 |  |  |  | 2,113 |
Total product revenue |  | $ | 162,048 |  |  | $ | 130,859 |  |  | $ | 91,920 |
Computation of Basic and Diluted Net Loss per Share | The following table sets forth the reconciliation of the numerator and denominator used in the computation of basic and diluted net loss per share for the years ended December 31, 2022, 2021 and 2020 (in thousands, except per share amounts):
|  | Year Ended December 31, |  |
|  | 2022 |  |  | 2021 |  |  | 2020 |  |
Numerator for Basic and Diluted: |  |  |  |  |  |  |  |  |  |
Net loss attributable to Cerus Corporation |  | $ | (42,779 | ) |  | $ | (54,374 | ) |  | $ | (59,857 | ) |
Denominator: |  |  |  |  |  |  |  |  |  |
Basic weighted average number of shares outstanding |  |  | 176,545 |  |  |  | 171,279 |  |  |  | 163,949 |  |
Effect of dilutive potential shares |  |  | — |  |  |  | — |  |  |  | — |  |
Diluted weighted average number of shares outstanding |  |  | 176,545 |  |  |  | 171,279 |  |  |  | 163,949 |  |
Net loss per share attributable to Cerus Corporation: |  |  |  |  |  |  |  |  |  |
Basic and diluted |  | $ | (0.24 | ) |  | $ | (0.32 | ) |  | $ | (0.37 | ) |
Anti-Dilutive Effect of Common Shares | The table below presents potential shares that were excluded from the calculation of the weighted average number of shares outstanding used for the calculation of diluted net loss per share. These are excluded from the calculation due to their anti-dilutive effect for the years ended December 31, 2022, 2021 and 2020 (shares in thousands):
|  | Year Ended December 31, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
Weighted average number of anti-dilutive potential shares: |  |  |  |  |  |  |  |  |
Stock options |  |  | 16,072 |  |  |  | 16,345 |  |  |  | 17,692 |
Restricted stock units |  |  | 7,966 |  |  |  | 6,798 |  |  |  | 5,485 |
Employee stock purchase plan rights |  |  | 252 |  |  |  | 153 |  |  |  | 32 |
Total |  |  | 24,290 |  |  |  | 23,296 |  |  |  | 23,209 |

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