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Goodwill and Intangible Assets Goodwill (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2017 | Dec. 31, 2016
Goodwill [Roll Forward] |  |
Beginning Balance, Goodwill | $ 217,970 |
Goodwill, Translation and Purchase Accounting Adjustments | 2,110 |
Goodwill, Acquired During Period | 237,401 |
Ending Balance, Goodwill | 457,481 |
Goodwill, Impaired, Accumulated Impairment Loss | 195,846 | $ 195,846
Energy & Chemicals [Member] |  |
Goodwill [Roll Forward] |  |
Beginning Balance, Goodwill | 27,873 |
Goodwill, Translation and Purchase Accounting Adjustments | 0 |
Goodwill, Acquired During Period | 236,246 |
Ending Balance, Goodwill | 264,119 |
Goodwill, Impaired, Accumulated Impairment Loss | 64,603 | 64,603
Distribution & Storage [Member] |  |
Goodwill [Roll Forward] |  |
Beginning Balance, Goodwill | 165,520 |
Goodwill, Translation and Purchase Accounting Adjustments | 2,214 |
Goodwill, Acquired During Period | 1,155 |
Ending Balance, Goodwill | 168,889 |
Goodwill, Impaired, Accumulated Impairment Loss | 0 | 0
BioMedical [Member] |  |
Goodwill [Roll Forward] |  |
Beginning Balance, Goodwill | 24,577 |
Goodwill, Translation and Purchase Accounting Adjustments | 104 |
Goodwill, Acquired During Period | 0 |
Ending Balance, Goodwill | 24,473 |
Goodwill, Impaired, Accumulated Impairment Loss | $ 131,243 | $ 131,243

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- 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 -Subparagraph (a) -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 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975 + Details
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- 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 (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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