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Noncontrolling Interests	12 Months Ended
Noncontrolling Interests	Dec. 31, 2017
Noncontrolling Interests [Abstract]
Noncontrolling Interests	Note 17 Noncontrolling Interests As of December 31, 2017, the Company owned approximately 70% of the capital and voting rights of Robtec, a service bureau and distributor of 3D printing and scanning products in Brazil. Robtec was acquired on November 25, 2014. As of December 31, 2017, the Company owned approximately 70% of the capital and voting rights of Easyway, a service bureau and distributor of 3D printing and scanning products in China. Approximately 65% of the capital and voting rights of Easyway were acquired on April 2, 2015, and an additional 5% of the capital and voting rights of Easyway were acquired on July 19, 2017 for $2.3 million.