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Computation of Net Loss Per Share (Schedule of Computation of Net Loss Per Share Reconciliation) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Numerator for basic and diluted net loss per share:
Net loss attributable to 3D Systems Corporation													$ (45,505)	$ (66,191)	$ (38,419)
Denominator for basic and diluted net loss per share:
Weighted average shares (in shares)													112,327	111,554	111,189
Net loss per share — basic and diluted (in usd per share)	$ (0.04)	$ (0.10)	$ (0.08)	$ (0.19)	$ (0.08)	$ (0.34)	$ (0.08)	$ (0.09)	$ 0.05	$ (0.19)	$ (0.04)	$ (0.16)	$ (0.41)	$ (0.59)	$ (0.35)

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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