Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Business Activities (Details)

v3.10.0.1
Business Activities (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2018
Sep. 30, 2018
Sep. 30, 2017
Business Acquisition [Line Items]      
Gain on sale of facility   $ 7,932
Evolve [Member]      
Business Acquisition [Line Items]      
Non-cash Charges   1,600  
Share losses of associated companies due to the write-off of in-process research and development project   5,000  
Eden Prairie [Member]      
Business Acquisition [Line Items]      
Total consideration $ 3,700    
Gain on sale of facility $ 1,600    
Solidscape [Member]      
Business Acquisition [Line Items]      
Gain on sale of facility   $ 7,000