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

Acquisitions and Other Business Activities (Narrative) (Details)

v3.3.0.814
Acquisitions and Other Business Activities (Narrative) (Details)
$ in Thousands
 1 Months Ended 9 Months Ended
Jul. 14, 2014
shares
Sep. 30, 2015
USD ($)
Jul. 31, 2015
USD ($)
shares
Apr. 30, 2015
USD ($)
ft²
item
Sep. 30, 2015
USD ($)
Sep. 30, 2014
USD ($)
Jul. 01, 2015
Consideration issued for acquisition       $ 39,000      
Area of new building space under construction | ft²       126,000      
Area of additional building rights | ft²       387,500      
Repayment of short-term debt         $ 175,000  
Revolving Credit Facility [Member]              
Maturity term   5 years          
Amount outstanding   $ 250,000     250,000    
Repayment of short-term debt   175,000          
Additional financial expense on extinguishment of short-term debt         2,700    
Solid Concepts Inc [Member]              
Ownership percentage 100.00%            
Shares issued to settle the first annual installment of the deferred payments, share | shares     118,789        
Shares issued to settle the first annual installment of the deferred payments     $ 4,100        
Cash paid to settle the first annual installment of the deferred payments     $ 500        
Potential retention related payments         11,100    
Stock Issued During Period, Shares, Acquisitions | shares 978,601            
Solid Concepts Inc [Member] | Level 3 [Member]              
Fair value of the remaining deferred payments   8,100     8,100    
Undiscounted amount of the remaining deferred payments   $ 9,500     $ 9,500    
Increase percentage in share price whose effect on fair value of deferred payments         10.00%    
Increase in fair value of remaining deferred payments due to increase of share price         $ 800    
Decrease percentage in share price whose effect on fair value of deferred payments liability         10.00%    
Increase in fair value of deferred payments liability due to decrease of share price         $ 200    
Solid Concepts Inc [Member] | Retention-related and other payments [Member]              
Shares issued to settle the first annual installment of the deferred payments, share | shares     117,611        
Shares issued to settle the first annual installment of the deferred payments     $ 4,100        
Cash paid to settle the first annual installment of the deferred payments     $ 2,800        
MakerBot [Member]              
Number of stores | item       3      
Rapid Technologies GmbH [Member]              
Ownership percentage             100.00%