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Commitments And Contingencies (Changes In Redeemable Noncontrolling Interests) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Mar. 31, 2015 | Dec. 31, 2014
Commitments And Contingencies [Abstract] |  |
Balance at January 1 | $ 8,872 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount |
Changes in redemption value |  | 8,550 ddd_RedeemableNonControllingInterestPeriodIncrease
Currency translation adjustments |  | 322 ddd_RedeemableNonControllingInterestCurrencyTranslationAdjustment
Balance at March 31, | $ 8,872 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount | $ 8,872 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount

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- Definition Redeemable Non Controlling Interest Currency Translation Adjustment. + References No definition available. + Details
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- Definition Redeemable Non Controlling Interest Period Increase + References No definition available. + Details
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Namespace Prefix: | ddd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Balance Type: | na
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- Definition As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (16)(c) -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (12)(c) -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 + Details
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Balance Type: | credit
Period Type: | instant