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

Acquisitions (Schedule of Adjustment of Supplemental Pro Forma Information) (Details)

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Acquisitions (Schedule of Adjustment of Supplemental Pro Forma Information) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Makerbot [Member]
Dec. 31, 2012
Makerbot [Member]
Dec. 31, 2012
Objet [Member]
Dec. 31, 2011
Objet [Member]
Business Acquisition [Line Items]        
Stock-based compensation related to business combination     $ 22,642 $ 22,079
Increase in amortization of intangibles 13,466 23,556 44,239 48,261
Adjust performance bonus expenses (163) 19,836    
Adjust expenses related to business combination (deal fees, inventory, interest and deferred revenues step-up and earn-out revaluation) (10,628) 11,272 (28,850) 50,644
Adjust taxes related to the adjustments to the supplemental pro forma (4,239) (20,226) (2,899) (6,960)
Total pro forma information adjustments $ (1,564) $ 34,438 $ 35,132 $ 114,024