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Earnings (Loss) Per Share (Schedule Of Earnings Per Share Reconciliation) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Earnings (Loss) Per Share, Basic And Diluted [Abstract]        
Net income (loss) attributable to 3D Systems Corporation - numerator for basic and diluted net earnings per share $ (13,696) $ 2,125 $ (26,877) $ 7,002
Earnings (loss) per share, basic and diluted $ (0.12) $ 0.02 $ (0.24) $ 0.07
Weighted average shares - denominator for basic and diluted net earnings per share 112,017 106,407 111,875 104,985
Interest expense excluded from diluted earnings per share calculation [1]   $ 206   $ 362
5.5% Convertible notes shares excluded from diluted earnings per share calculation [1]   876   876
Restricted stock units excluded from diluted earnings per share calculation [2] $ 40   $ 37  
[1] Average outstanding diluted earnings (loss) per share calculation excludes shares that may be issued upon conversion of the outstanding senior convertible notes since the effect of their inclusion would have been anti-dilutive.
[2] Average outstanding diluted earnings (loss) per share calculation excludes restricted stock units since the effect of their inclusion would have been anti-dilutive.