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Loss Per Share (Schedule Of Net Income Per Share Reconciliation) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Loss Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]    
Net loss attributable to 3D Systems Corporation $ (17,788) $ (13,181)
Weighted average shares 112,197 111,731
Net loss per share, basic and diluted $ (0.16) $ (0.12)
Restricted Stock Units [Member]    
Loss Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]    
Restricted stock units excluded from diluted loss per share calculation [1] 88 33
[1] The calculation for average outstanding diluted loss per share excludes restricted stock units since the effect of their inclusion would have been anti-dilutive.