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Net Income Attributable To IPG Photonics Corporation Per Share (Tables)
12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table sets forth the computation of diluted net income attributable to IPG Photonics Corporation per share: 
Year Ended December 31,
 201820172016
Net income attributable to IPG Photonics Corporation$404,027 $347,614 $260,752 
Net income attributable to common stockholders404,027 347,614 260,752 
Weighted average shares53,522 53,495 53,068 
Dilutive effect of common stock equivalents1,204 1,204 729 
Diluted weighted average common shares54,726 54,699 53,797 
Basic net income attributable to IPG Photonics Corporation per share$7.55 $6.50 $4.91 
Basic net income attributable to common stockholders$7.55 $6.50 $4.91 
Diluted net income attributable to IPG Photonics Corporation per share$7.38 $6.36 $4.85 
Diluted net income attributable to common stockholders$7.38 $6.36 $4.85