The period over which acquired deferred revenue will be recognized.

No definition available.

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- Definition

The calculated weighted-average amortization period of a major class of finite-lived intangible assets acquired during the current period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 44

-Subparagraph a(3)

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-Section 50

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

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- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 51

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- Definition

Percentage of voting equity interests acquired in the business combination.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph c

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-Publisher FASB

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- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph e

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- Definition

The amount of acquisition cost of a business combination allocated to deferred revenue of the acquired entity.

+ References

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

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 01-3

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- Definition

Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-Subparagraph c

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-Name Statement of Financial Accounting Standard (FAS)

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The amount of acquisition cost of a business combination allocated to net tangible assets.

+ References

No definition available.

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- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

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-Name Statement of Financial Accounting Standard (FAS)

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-Publisher FASB

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- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

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Goodwill and Other Intangible Assets - Acquisition Information (Details) In Millions, unless otherwise specified	12 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended		12 Months Ended			12 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended
	Dec. 31, 2012 ASPEX Corporation [Member] USD ($)	Jan. 09, 2012 ASPEX Corporation [Member] USD ($)	Dec. 31, 2012 ASPEX Corporation [Member] Developed technology [Member] Years	Jan. 09, 2012 ASPEX Corporation [Member] Developed technology [Member] USD ($)	Dec. 31, 2012 ASPEX Corporation [Member] Customer relationships [Member] Years	Jan. 09, 2012 ASPEX Corporation [Member] Customer relationships [Member] USD ($)	Jul. 09, 2012 AP Tech [Member] USD ($)	Dec. 31, 2012 AP Tech [Member] Customer relationships [Member] Years	Jul. 09, 2012 AP Tech [Member] Customer relationships [Member] USD ($)	Dec. 31, 2012 Visualization Sciences Group [Member] Years	Aug. 01, 2012 Visualization Sciences Group [Member] USD ($)	Aug. 01, 2012 Visualization Sciences Group [Member] EUR (€)	Dec. 31, 2012 Visualization Sciences Group [Member] Developed technology [Member] Years	Aug. 01, 2012 Visualization Sciences Group [Member] Developed technology [Member] USD ($)	Dec. 31, 2012 Visualization Sciences Group [Member] Trademarks [Member] Years	Aug. 01, 2012 Visualization Sciences Group [Member] Trademarks [Member] USD ($)	Dec. 31, 2012 Visualization Sciences Group [Member] Customer relationships [Member] Years	Aug. 01, 2012 Visualization Sciences Group [Member] Customer relationships [Member] USD ($)	Jan. 09, 2012 Materials Science [Member] ASPEX Corporation [Member] USD ($)	Dec. 31, 2012 Materials Science [Member] Visualization Sciences Group [Member] USD ($)	Dec. 31, 2012 Service and Components [Member] AP Tech [Member] USD ($)	Jul. 09, 2012 Service and Components [Member] AP Tech [Member] USD ($)
Business Acquisition [Line Items]
Percentage of voting interests acquired		100.00%									100.00%	100.00%
Acquisition purchase price		$ 30.5					$ 12.0				$ 55.1	€ 44.8
Acquisition related transaction costs		0.2					0.4				0.4
Net tangible assets (liabilities) acquired, fair value		1.9					2.0				(1.0)
Deferred revenue acquired											4.3
Net intangible assets acquired, fair value		9.7		6.4		1.7	4.6		4.6		22.6			8.3		1.8		12.5
Deferred revenue acquired, recognition period										3.5
Net intangible assets acquired, weighted average amortization period			7.0		5.0			10					10		5		10
Acquisition related goodwill											41.9								22.0			5.4
Tax deductible goodwill		1.3					5.4
Revenue	12.3																			6.9	3.9
Net income (loss)	$ 0.6																			$ (0.3)	$ (0.7)