Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Certain Transactions (Details)

v3.19.3.a.u2
Certain Transactions (Details) - USD ($)
$ in Thousands
 3 Months Ended 10 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Sep. 30, 2018
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Business Acquisition [Line Items]                
Net gain on divestiture of minority interest         $ 3,578 $ 7,908 $ (788)  
Operating expenses         $ 325,391 334,071 353,300  
Bank Loan [Member]                
Business Acquisition [Line Items]                
Proceeds from secured debt               $ 260,000
Interest rate               3.35%
Credit Line [Member]                
Business Acquisition [Line Items]                
Proceeds from secured debt               $ 240,000
Proceeds from lines of credit             100,000  
Xaar 3D Ltd. [Member]                
Business Acquisition [Line Items]                
Ownership percentage held by company 15.00%       45.00%      
Ownership percentage retained by Xaar         55.00%      
Consideration paid         $ 157,000      
LPW Technology [Member]                
Business Acquisition [Line Items]                
Total consideration from divestiture of minority interest   $ 33,600            
Net gain on divestiture of minority interest   $ 13,500            
Net loss for the year ended           $ 4,600 $ 1,800  
Solidscape, Inc [Member]                
Business Acquisition [Line Items]                
Net gain on divestiture of minority interest     $ 7,000          
Evolve Research and Development Project [Member]                
Business Acquisition [Line Items]                
Operating expenses       $ 1,600        
Write-off of in-process research and development project       $ 5,000        
Unconsolidated Entity [Member]                
Business Acquisition [Line Items]                
Net gain on divestiture of minority interest $ 3,600