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Noncontrolling Interest (Details)
 12 Months Ended
Dec. 31, 2014
Jul. 15, 2013
Business Acquisition [Line Items]    
Business Acquisition, Effective Date of Acquisition Dec. 17, 2014  
Phenix Systems [Member]    
Business Acquisition [Line Items]    
Business acquisition, ownership percentage 95.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= ddd_PhenixSystemsMember		 82.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= ddd_PhenixSystemsMember
Business Acquisition, Effective Date of Acquisition Jul. 15, 2013