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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 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 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 $ (32,249) $ 3,084 $ (59,126) $ 10,086
Weighted average shares - denominator for basic and diluted net earnings per share 112,010 110,737 111,920 106,923
Earnings (loss) per share, basic and diluted $ (0.29) $ 0.03 $ (0.53) $ 0.09
Interest expense excluded from diluted earnings per share calculation [1]       $ 362
5.5% Convertible notes shares excluded from diluted earnings per share calculation [1]       584
Restricted stock units excluded from diluted earnings per share calculation [2] $ 109   $ 61  
[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.