Goodwill and Intangible Assets Goodwill (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Goodwill [Roll Forward]
Beginning Balance, Goodwill	$ 398,905
Goodwill, Translation and Purchase Accounting Adjustments	26
Ending Balance, Goodwill	398,931
Energy & Chemicals [Member]
Goodwill [Roll Forward]
Beginning Balance, Goodwill	83,215
Goodwill, Translation and Purchase Accounting Adjustments	0
Ending Balance, Goodwill	83,215
Distribution & Storage [Member]
Goodwill [Roll Forward]
Beginning Balance, Goodwill	160,054
Goodwill, Translation and Purchase Accounting Adjustments	26
Ending Balance, Goodwill	160,080
BioMedical [Member]
Goodwill [Roll Forward]
Beginning Balance, Goodwill	155,636
Goodwill, Translation and Purchase Accounting Adjustments	0
Ending Balance, Goodwill	$ 155,636