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Segment Information (Consolidated Revenue By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Information [Line Items]
Consolidated revenue	$ 509,927	$ 559,566
Operating Segments [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Consolidated revenue	506,143	554,765
Operating Segments [Member] | All Other [Member]
Segment Information [Line Items]
Consolidated revenue	3,784	4,801
Operating Segments [Member] | Lubricant Additives [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Consolidated revenue	418,852	453,722
Operating Segments [Member] | Fuel Additives [Member] | Petroleum Additives [Member]
Segment Information [Line Items]
Consolidated revenue	$ 87,291	$ 101,043

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

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+ References

No definition available.

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