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

Goodwill (Narrative) (Details)

v3.3.1.900
Goodwill (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Oct. 01, 2014
Dec. 31, 2015
Sep. 30, 2015
Mar. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Goodwill [Line Items]              
Non-tax deductible impairment charge         $ 10,500    
Goodwill   $ 383,853     383,853 $ 1,323,502 $ 1,195,900
Goodwill impairment charges   96,500 $ 695,500   942,408 102,470
Objet Ltd [Member]              
Goodwill [Line Items]              
Non-tax deductible impairment charge     $ 537,100        
Percentage of decrease in terminal year growth rate     1.00%        
Percentage of increase in terminal year growth rate     1.00%        
Change in fair value due to 1% decrease in terminal year growth rate     $ 102,000        
Change in fair value due to 1% increase in terminal year growth rate     $ 156,000        
Goodwill   $ 384,000     384,000    
Percentage of fair value exceeding carrying value of reporting units   14.00%          
Objet Ltd [Member] | Goodwill [Member]              
Goodwill [Line Items]              
Expected cash flow period   5 years 5 years        
Growth rate (as a percent)   3.30% 3.30%        
Discount rate (as a percent)   13.00% 12.00%        
MakerBot [Member]              
Goodwill [Line Items]              
Non-tax deductible impairment charge     $ 125,100 $ 150,400   $ 102,500  
Expected cash flow period           5 years  
Growth rate (as a percent)           3.50%  
Discount rate (as a percent)           13.50%  
Goodwill   $ 0     0 $ 376,000  
Percentage of fair value exceeding carrying value of reporting units 5.00%            
Goodwill impairment charges         $ 269,500 $ 102,500  
MakerBot [Member] | Goodwill [Member]              
Goodwill [Line Items]              
Expected cash flow period         5 years    
Growth rate (as a percent)         3.30%    
Discount rate (as a percent)         13.50%    
SDM [Member]              
Goodwill [Line Items]              
Non-tax deductible impairment charge     105,200        
Goodwill   0     $ 0    
SDM [Member] | Goodwill [Member]              
Goodwill [Line Items]              
Expected cash flow period         5 years    
Growth rate (as a percent)         3.30%    
Discount rate (as a percent)         13.00%    
Solidscape, Inc [Member]              
Goodwill [Line Items]              
Non-tax deductible impairment charge     $ 24,600        
Goodwill   $ 0     $ 0    
Solidscape, Inc [Member] | Goodwill [Member]              
Goodwill [Line Items]              
Expected cash flow period         5 years    
Growth rate (as a percent)         3.30%    
Discount rate (as a percent)         13.50%