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Net Income Attributable To IPG Photonics Corporation Per Share (Tables) | 9 Months Ended
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Sep. 30, 2020
Earnings Per Share [Abstract] |
Computation of Diluted Net Income Per Share | The following table sets forth the computation of diluted net income attributable to IPG Photonics Corporation per share:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Net income attributable to IPG Photonics Corporation | $ | 35,604 |  |  | $ | 57,253 |  |  | $ | 110,233 |  |  | $ | 184,684 |
Net income attributable to common stockholders | 35,604 |  |  | 57,253 |  |  | 110,233 |  |  | 184,684 |
Weighted average shares | 53,098 |  |  | 52,928 |  |  | 53,136 |  |  | 53,073 |
Dilutive effect of common stock equivalents | 566 |  |  | 694 |  |  | 555 |  |  | 791 |
Diluted weighted average common shares | 53,664 |  |  | 53,622 |  |  | 53,691 |  |  | 53,864 |
Basic net income attributable to IPG Photonics Corporation per share | $ | 0.67 |  |  | $ | 1.08 |  |  | $ | 2.07 |  |  | $ | 3.48 |
Basic net income attributable to common stockholders | $ | 0.67 |  |  | $ | 1.08 |  |  | $ | 2.07 |  |  | $ | 3.48 |
Diluted net income attributable to IPG Photonics Corporation per share | $ | 0.66 |  |  | $ | 1.07 |  |  | $ | 2.05 |  |  | $ | 3.43 |
Diluted net income attributable to common stockholders | $ | 0.66 |  |  | $ | 1.07 |  |  | $ | 2.05 |  |  | $ | 3.43 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share | The weighted average anti-dilutive shares outstanding for the three and nine months ended September 30, 2020 and 2019 were as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Non-qualified stock options | 528,300 |  |  | 763,000 |  |  | 555,800 |  |  | 578,000 |
Restricted stock units | 28,900 |  |  | 167,200 |  |  | 36,200 |  |  | 149,200 |
Performance stock units | — |  |  | 45,500 |  |  | 19,800 |  |  | 40,800 |
Employee stock purchase plan | 5,500 |  |  | 6,100 |  |  | 16,400 |  |  | 18,200 |
Total weighed average anti-dilutive shares outstanding | 562,700 |  |  | 981,800 |  |  | 628,200 |  |  | 786,200 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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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