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Earnings Per Share (Schedule Of Earnings Per Share Reconciliation) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Nov. 30, 2011
Earnings Per Share, Basic And Diluted [Abstract]          
Net income attributable to 3D Systems - numerator for basic net earnings per share $ 2,125 $ 9,343 $ 7,002 $ 15,226  
Numerator for dilutive earnings per share 2,125 9,343 7,002 15,226  
Weighted average shares - denominator for basic net earnings per share 106,407 96,248 104,985 94,047  
Denominator for dilutive net earnings per share 106,407 96,248 104,985 94,047  
Earnings per share, basic and diluted $ 0.02 $ 0.10 $ 0.07 $ 0.16  
Interest expense excluded from diluted earnings per share calculation $ 206 [1] $ 511 [1] $ 362 [1] $ 1,508 [1]  
5.5% Convertible notes shares excluded from diluted earnings per share calculation 876 [1] 1,925 [1] 876 [1] 2,852 [1]  
Interest rate         5.50%
[1] Average outstanding diluted earnings 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.