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

Acquisitions (Summary of Purchase Price Allocation) (Details)

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Acquisitions (Summary of Purchase Price Allocation) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Makerbot [Member]
Dec. 31, 2012
Objet [Member]
Dec. 31, 2011
Solidscape, Inc [Member]
Cash and cash equivalents       $ 3,405 $ 41,524 $ 540
Restricted cash         845  
Short-term bank deposit         30,062  
Accounts receivable           439
Accounts receivable - Trade       878 23,633  
Accounts receivable - Other       923 12,477  
Deferred tax assets       5,964 1,755 383
Prepaid expenses         1,011  
Inventories       10,314 40,364 1,578
Other current assets           771
Property, plant and equipment       4,658 15,475 364
Goodwill       372,008 797,063 24,616
Intangible assets 168,386 490,176 19,500 168,386 490,176 19,500
Other non-current assets       7,068 2,539  
Total assets acquired       573,604 1,456,924 48,191
Accounts payable & other liabilities       6,581 49,876 (1,041)
Unearned revenue       4,075 8,674 (154)
Deferred tax liabilities       69,120 51,003 (7,897)
Other non-current liabilities       178 6,474  
Total liabilities assumed       79,954 116,027 (9,092)
Total purchase price $ 493,650     $ 493,650 $ 1,340,897 $ 39,099