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Goodwill and Intangible Assets Goodwill (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Goodwill [Roll Forward]
Beginning Balance, Goodwill	$ 398,905
Goodwill, Translation and Purchase Accounting Adjustments	(108)
Goodwill, Acquired During Period	8,563
Ending Balance, Goodwill	407,360
Energy & Chemicals [Member]
Goodwill [Roll Forward]
Beginning Balance, Goodwill	83,215
Goodwill, Translation and Purchase Accounting Adjustments	0
Goodwill, Acquired During Period	8,563
Ending Balance, Goodwill	91,778
Distribution & Storage [Member]
Goodwill [Roll Forward]
Beginning Balance, Goodwill	160,054
Goodwill, Translation and Purchase Accounting Adjustments	(108)
Goodwill, Acquired During Period	0
Ending Balance, Goodwill	159,946
BioMedical [Member]
Goodwill [Roll Forward]
Beginning Balance, Goodwill	155,636
Goodwill, Translation and Purchase Accounting Adjustments	0
Goodwill, Acquired During Period	0
Ending Balance, Goodwill	$ 155,636

X

- Definition

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=14024403&loc=d3e13816-109267



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

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

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

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=14024403&loc=d3e13816-109267

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_GoodwillRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting 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

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

+ Details

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Period Type:	duration