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

Material Commitments (Narrative) (Details)

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Material Commitments (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 1 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Makerbot [Member]
Aug. 15, 2013
Makerbot [Member]
Nov. 30, 2013
Revolving credit facility [Member]
Material Commitments [Abstract]            
Inventory purchases $ 65,800 $ 30,200        
Rent expense 4,700 1,000 800      
Line of Credit Facility [Line Items]            
Revolving credit facility term           5 years
Amount of revolving credit facility           250,000
Revolving credit facility, maturity date           Oct. 31, 2018
Business Acquisition [Line Items]            
Earn-out obligation       $ 29,000 $ 28,300