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Subsequent Event (Details) - Subsequent Event [Member] | Oct. 28, 2015 item
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Subsequent Event [Line Items] |
Previous number of members on board | 10
Number of members on the board | 9

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- Definition Number of members on the board + References No definition available. + Details
Name: | ddd_NumberOfMembersOnBoard
Namespace Prefix: | ddd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Previous number of members on board + References No definition available. + Details
Name: | ddd_PreviousNumberOfMembersOnBoard
Namespace Prefix: | ddd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |