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Subsequent Event (Details) (Subsequent Event [Member], Wuxi Easyway [Member]) | 3 Months Ended |
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Mar. 31, 2015 | Apr. 02, 2015
Subsequent Event [Member] | Wuxi Easyway [Member] |  |
Subsequent Event [Line Items] |  |
Business acquisition, ownership percentage |  | 65.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = ddd_WuxiEasywayMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Subsequent event date | Apr. 02, 2015 |

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Date the event occurred after the balance sheet date but before financial statements are issues or available to be issued, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration