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

Acquisitions and Other Business Activities (Schedule of Results of Operations) (Details)

v3.3.1.900
Acquisitions and Other Business Activities (Schedule of Results of Operations) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Business Acquisition [Line Items]      
Net sales $ 503,946 $ 612,138 $ 414,853
Net income (loss) $ (1,372,835) $ (119,420) (26,954)
MakerBot [Member]      
Business Acquisition [Line Items]      
Net sales     35,603
Net income (loss)     $ (5,306)