CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (16,762)	$ (11,550)	$ (64,972)	$ (41,123)
Other comprehensive income (loss), net of taxes:
Pension adjustments	91	57	207	204
Derivative financial instruments	(798)	0	(798)	0
Foreign currency translation	(8,101)	(1,894)	(6,854)	(13,090)
Total other comprehensive income (loss), net of taxes:	(8,808)	(1,837)	(7,445)	(12,886)
Total comprehensive loss, net of taxes	(25,570)	(13,387)	(72,417)	(54,009)
Comprehensive income attributable to noncontrolling interests	60	26	128	565
Comprehensive loss attributable to 3D Systems Corporation	$ (25,630)	$ (13,413)	$ (72,545)	$ (54,574)