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

Goodwill and Other Intangible Assets (Narrative) (Details)

v3.2.0.727
Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2015
Mar. 31, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Impairment charges       $ 43,205    
Amortization of intangible assets $ 18,500   $ 19,900 40,500 $ 38,900  
Percentage of fair value exceeding carrying value of reporting units except for objet reporting unit 10.00%          
Goodwill $ 1,172,125     1,172,125   $ 1,323,502
Objet Ltd [Member]            
Expected cash flow period 5 years          
Growth rate (as a percent) 3.50%          
Discount rate (as a percent) 12.00%          
Percentage of decrease in growth rate 1.00%          
Percentage of increase in discount rate 1.00%          
Change in fair value due to 1% decrease in growth rate $ 136,000          
Change in fair value due to 1% increase in discount rate $ 199,000          
Percentage of fair value exceeding carrying value of reporting units 5.00%          
Goodwill $ 918,000     918,000    
MakerBot [Member]            
Impairment charges   $ 43,200       $ 102,500
Non-tax deductible impairment charge       150,400    
Percentage of decrease in growth rate   1.00%        
Percentage of increase in discount rate   1.00%        
Change in fair value due to 1% decrease in growth rate   $ 17,800        
Change in fair value due to 1% increase in discount rate   29,100        
Goodwill $ 125,000     $ 125,000    
MakerBot [Member] | Level 3 [Member]            
Growth rate (as a percent)       3.50%    
Discount rate (as a percent)       13.50%    
MakerBot [Member] | Developed Technology [Member]            
Impairment charges   29,800        
MakerBot [Member] | Customer Relationships [Member]            
Impairment charges   $ 13,400