Goodwill And Intangible Assets, Net (Schedule Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segments Of Goodwill [Line Items]
Beginning balance	$ 180,521us-gaap_Goodwill	$ 174,994us-gaap_Goodwill	$ 172,610us-gaap_Goodwill
Business Combinations	13,077us-gaap_GoodwillAcquiredDuringPeriod	6,741us-gaap_GoodwillAcquiredDuringPeriod
Impact of Changes in Foreign Currency Exchange Rates	(9,148)us-gaap_GoodwillTranslationAdjustments	(1,214)us-gaap_GoodwillTranslationAdjustments	2,384us-gaap_GoodwillTranslationAdjustments
Ending balance	184,450us-gaap_Goodwill	180,521us-gaap_Goodwill	174,994us-gaap_Goodwill
CAG [Member]
Segments Of Goodwill [Line Items]
Beginning balance	141,408	143,155	141,677
Business Combinations	13,077	250
Impact of Changes in Foreign Currency Exchange Rates	(6,334)	(1,997)	1,478
Ending balance	148,151	141,408	143,155
Water Segment [Member]
Segments Of Goodwill [Line Items]
Beginning balance	14,515	14,179	13,576
Impact of Changes in Foreign Currency Exchange Rates	(826)	336	603
Ending balance	13,689	14,515	14,179
LPD [Member]
Segments Of Goodwill [Line Items]
Beginning balance	18,067	11,129	10,826
Business Combinations		6,491
Impact of Changes in Foreign Currency Exchange Rates	(1,988)	447	303
Ending balance	16,079	18,067	11,129
Other Segment [Member]
Segments Of Goodwill [Line Items]
Beginning balance				6,531
Ending balance	$ 6,531	$ 6,531	$ 6,531	$ 6,531

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

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