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Accrued and Other Liabilities (Schedule of Recognized Warranty Revenue and Incurred Warranty Costs) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Warranty obligations [Roll Forward] |  |  |
Beginning Balance | $ 10,202 | $ 9,051 | $ 10,663
Additional Accrual/ Revenue Deferred | 9,347 | 13,623 | 12,859
Costs Incurred/ Deferred Revenue Amortization | (11,889) | (12,472) | (14,471)
Ending Balance | $ 7,660 | $ 10,202 | $ 9,051

X
- Definition Deferred warranty revenue. + References No definition available. + Details
Name: | ddd_DeferredWarrantyRevenue
Namespace Prefix: | ddd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Warranty revenue deferred. + References No definition available. + Details
Name: | ddd_WarrantyRevenueDeferred
Namespace Prefix: | ddd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Warranty revenue recognized. + References No definition available. + Details
Name: | ddd_WarrantyRevenueRecognized
Namespace Prefix: | ddd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration