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Segment Information (Schedule Of Revenue From Unaffiliated Customers By Product) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Revenue	$ 170,504	$ 151,512	$ 331,226	$ 299,270
Products [Member]
Segment Reporting Information [Line Items]
Revenue	68,176	61,948	130,891	122,701
Materials [Member]
Segment Reporting Information [Line Items]
Revenue	36,401	38,036	73,508	78,477
Services [Member]
Segment Reporting Information [Line Items]
Revenue	$ 65,927	$ 51,528	$ 126,827	$ 98,092

X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 225



-SubTopic 10



-Section S99



-Paragraph 2



-Subparagraph (SX 210.5-03.1)



-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Section 03



-Paragraph 1



-Article 5

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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