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Net (Loss) Income Attributable to Penumbra, Inc. Per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Reconciliation of the Numerator and Denominator used in the Calculation of the Basic and Diluted Earnings per Share | A reconciliation of the numerator and denominator used in the calculation of the basic and diluted net income attributable to Penumbra, Inc. per share is as follows (in thousands, except share and per share amounts):
|  | Three Months Ended March 31, |  |
|  | 2021 |  | 2020 |  |  |  |
Numerator: |  |  |  |  |  |  |  |
Net income attributable to Penumbra, Inc. |  | $ | 11,836 |  |  | $ | 1,425 |  |  |  |  |
Denominator: |  |  |  |  |  |  |  |
Weighted average shares used to compute net income attributable to common stockholders: |  |  |  |  |  |  |  |
Basic |  | 36,455,712 |  |  | 35,042,912 |  |  |  |  |
Potential dilutive stock-based options and awards |  | 1,077,808 |  |  | 1,319,814 |  |  |  |  |
Diluted |  | 37,533,520 |  |  | 36,362,726 |  |  |  |  |
Net income attributable to Penumbra, Inc. per share: |  |  |  |  |  |  |  |
Basic |  | $ | 0.32 |  |  | $ | 0.04 |  |  |  |  |
Diluted |  | $ | 0.32 |  |  | $ | 0.04 |  |  |  |  |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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