Description of acquired indefinite lived intangible assets weighted average useful life.

No definition available.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

+ Details

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- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472

+ Details

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Balance Type:	debit
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- Details

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Acquisitions (Summary of Intangible Assets Acquired) (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended		12 Months Ended
	Aug. 15, 2013	Dec. 01, 2012	Dec. 31, 2014
MakerBot [Member]
Total intangible assets, amount	$ 168,386
Objet [Member]
Total intangible assets, amount		490,176
Developed Technology [Member] \| MakerBot [Member]
Intangible assets, Weighted Average Life	5 years
Total intangible assets, amount	43,227
Developed Technology [Member] \| Objet [Member]
Intangible assets, Weighted Average Life		9 years 7 months 6 days
Total intangible assets, amount		374,126
Trade name [Member] \| MakerBot [Member]
Intangible assets, Weighted Average Life	11 years
Total intangible assets, amount	42,134
Trade name [Member] \| Objet [Member]
Intangible assets, Weighted Average Life		9 years
Total intangible assets, amount		15,291
Customer relationships - Distributors [Member] \| MakerBot [Member]
Intangible assets, Weighted Average Life	10 years
Total intangible assets, amount	19,315
Customer relationships - Direct [Member] \| MakerBot [Member]
Intangible assets, Weighted Average Life	1 year
Total intangible assets, amount	3,435
Customer relationships - Direct [Member] \| Objet [Member]
Intangible assets, Weighted Average Life		10 years
Total intangible assets, amount		72,679
Customer relationships - Direct [Member] \| Solid Concepts Inc [Member]
Intangible assets, Weighted Average Life			6 years 7 months 6 days
Non-compete Agreement [Member] \| MakerBot [Member]
Intangible assets, Weighted Average Life	4 years
Total intangible assets, amount	10,004
IPR&D - Printers [Member] \| MakerBot [Member]
Total intangible assets, amount	34,189
Weighted Average Life - Years	Indefinite
IPR&D - Printers [Member] \| Objet [Member]
Total intangible assets, amount		28,080
Weighted Average Life - Years		Indefinite
IPR&D - Peripherals [Member] \| MakerBot [Member]
Total intangible assets, amount	$ 16,082
Weighted Average Life - Years	Indefinite