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

Acquisitions and Other Significant Business Activities (Narrative) (Details)

v3.8.0.1
Acquisitions and Other Significant Business Activities (Narrative) (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Sep. 30, 2015
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Jun. 30, 2016
Jul. 02, 2015
Apr. 30, 2015
ft²
Business Acquisition [Line Items]                  
Purchase of property and equipment       $ 22,308 $ 45,125 $ 84,299      
Change in fair value of obligations in connection with acquisitions       1,378 (872) (23,671)      
Area of new building space under construction | ft²                 283,900
Area of additional building rights | ft²                 235,400
Restructuring charges       6,600 6,600 26,200      
Repayments of Short-term Debt       175,000      
Selling, General and Administrative Expenses [Member]                  
Business Acquisition [Line Items]                  
Restructuring charges           14,800      
Research and Development, Net [Member]                  
Business Acquisition [Line Items]                  
Restructuring charges           1,500      
Cost Of Sales [Member]                  
Business Acquisition [Line Items]                  
Restructuring charges           9,900      
Revolving Credit Facility [Member]                  
Business Acquisition [Line Items]                  
Amount outstanding     $ 250,000            
Maturity term     5 years            
Repayments of Short-term Debt     $ 175,000            
Additional financial expense on termination of short-term debt     $ 2,700            
Workforce reductions [Member]                  
Business Acquisition [Line Items]                  
Restructuring charges           10,400      
Rehovot Property [Member]                  
Business Acquisition [Line Items]                  
Purchase of property and equipment       $ 68,200          
Bank Loan [Member]                  
Business Acquisition [Line Items]                  
Proceeds from secured debt $ 10,000 $ 26,000              
Maturity date   Dec. 31, 2023              
Interest rate 3.35%     3.35%          
Proceeds from lines of credit $ 10,000                
Credit Line [Member]                  
Business Acquisition [Line Items]                  
Proceeds from secured debt   $ 24,000              
Third party entity [Member] | Minimum [Member]                  
Business Acquisition [Line Items]                  
Ownership percentage             10.00%    
Third party entity [Member] | Maximum [Member]                  
Business Acquisition [Line Items]                  
Ownership percentage             40.00%    
MakerBot [Member] | Facility Closing [Member]                  
Business Acquisition [Line Items]                  
Restructuring charges           $ 15,800      
Rapid Technologies GmbH ("RTC") [Member]                  
Business Acquisition [Line Items]                  
Ownership percentage               100.00%