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Net Loss Per Share (Schedule Of Net Loss Per Share Reconciliation) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	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, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Net loss attributable to 3D Systems Corporation	$ (4,714)	$ (16,843)	$ (23,929)	$ (24,394)	$ (4,136)	$ (11,550)	$ (8,862)	$ (20,957)	$ (10,134)	$ (37,670)	$ (8,416)	$ (9,971)	$ (69,880)	$ (45,505)	$ (66,191)
Weighted average shares (in shares)													113,811	112,327	111,554
Net loss per share — basic and diluted (in dollars per share)	$ (0.04)	$ (0.15)	$ (0.21)	$ (0.22)	$ (0.04)	$ (0.10)	$ (0.08)	$ (0.19)	$ (0.08)	$ (0.34)	$ (0.08)	$ (0.09)	$ (0.61)	$ (0.41)	$ (0.59)

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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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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