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Noncontrolling Interests	3 Months Ended
Noncontrolling Interests	Mar. 31, 2020
Noncontrolling Interest [Abstract]
Noncontrolling Interests	(15) Noncontrolling Interests As of March 31, 2020, we owned 100% of the capital and voting rights of Robtec, a service bureau and distributor of 3D printing and scanning products in Brazil. Approximately 70% of the capital and voting rights of Robtec were acquired on November 25, 2014. On January 7, 2020, we made a payment equal to the redemption price of $10,000 and acquired the remaining 30% of the capital and voting rights.