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Segment and Geographic Information, Revenue from External Customers by Products and Services (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Product Revenue from External Customer [Line Items]
Revenue	$ 1,362,265	$ 1,383,210	$ 1,375,964
Traditional Flavors & Fragrances [Member]
Product Revenue from External Customer [Line Items]
Revenue	618,798	651,870	666,528
Natural Ingredients [Member]
Product Revenue from External Customer [Line Items]
Revenue	224,983	240,710	240,793
Food & Beverage Colors [Member]
Product Revenue from External Customer [Line Items]
Revenue	303,796	301,751	300,637
Non-Food Colors [Member]
Product Revenue from External Customer [Line Items]
Revenue	248,922	226,807	204,571
Interdivision Revenue [Member]
Product Revenue from External Customer [Line Items]
Revenue	$ (34,234)	$ (37,928)	$ (36,565)

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and 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(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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