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Net Income Attributable To IPG Photonics Corporation Per Share (Tables) | 9 Months Ended
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Sep. 30, 2018
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, |  |
| 2018 |  | 2017 |  | 2018 |  | 2017
Net income attributable to IPG Photonics Corporation | $ | 100,517 |  | $ | 115,597 |  | $ | 328,468 |  | $ | 294,658
Weighted average shares | 53,571 |  | 53,440 |  | 53,677 |  | 53,453
Dilutive effect of common stock equivalents | 1,125 |  | 1,258 |  | 1,318 |  | 1,117
Diluted weighted average common shares | 54,696 |  | 54,698 |  | 54,995 |  | 54,570
Basic net income attributable to IPG Photonics Corporation per share | $ | 1.88 |  | $ | 2.16 |  | $ | 6.12 |  | $ | 5.51
Diluted net income attributable to IPG Photonics Corporation per share | $ | 1.84 |  | $ | 2.11 |  | $ | 5.97 |  | $ | 5.40

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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