Segment and Geographic Information, Revenue from External Customers by Products Line (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue [Abstract]
Revenue	$ 1,380,264	$ 1,332,001	$ 1,322,934
Flavors, Extracts & Flavor Ingredients [Member]
Revenue [Abstract]
Revenue	455,818	399,331	378,967
Natural Ingredients [Member]
Revenue [Abstract]
Revenue	255,772	243,161	214,027
Fragrances [Member]
Revenue [Abstract]
Revenue	22,739	85,354	86,399
Yogurt Fruit Preparations [Member]
Revenue [Abstract]
Revenue	5,098	14,189	20,963
Food & Pharmaceutical Colors [Member]
Revenue [Abstract]
Revenue	385,069	346,269	340,327
Personal Care [Member]
Revenue [Abstract]
Revenue	158,237	141,331	159,640
Inks [Member]
Revenue [Abstract]
Revenue	1,964	13,418	35,192
Asia Pacific [Member]
Revenue [Abstract]
Revenue	135,348	121,227	118,248
Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	717,688	724,483	682,705
Flavors & Extracts [Member] | Flavors, Extracts & Flavor Ingredients [Member]
Revenue [Abstract]
Revenue	455,818	399,331	378,967
Flavors & Extracts [Member] | Natural Ingredients [Member]
Revenue [Abstract]
Revenue	255,772	243,161	214,027
Flavors & Extracts [Member] | Fragrances [Member]
Revenue [Abstract]
Revenue	22,739	85,354	86,399
Flavors & Extracts [Member] | Yogurt Fruit Preparations [Member]
Revenue [Abstract]
Revenue	5,098	14,189	20,963
Flavors & Extracts [Member] | Food & Pharmaceutical Colors [Member]
Revenue [Abstract]
Revenue	0	0	0
Flavors & Extracts [Member] | Personal Care [Member]
Revenue [Abstract]
Revenue	0	0	0
Flavors & Extracts [Member] | Inks [Member]
Revenue [Abstract]
Revenue	0	0	0
Flavors & Extracts [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	0	0	0
Color [Member]
Revenue [Abstract]
Revenue	527,626	486,536	522,051
Color [Member] | Flavors, Extracts & Flavor Ingredients [Member]
Revenue [Abstract]
Revenue	0	0	0
Color [Member] | Natural Ingredients [Member]
Revenue [Abstract]
Revenue	0	0	0
Color [Member] | Fragrances [Member]
Revenue [Abstract]
Revenue	0	0	0
Color [Member] | Yogurt Fruit Preparations [Member]
Revenue [Abstract]
Revenue	0	0	0
Color [Member] | Food & Pharmaceutical Colors [Member]
Revenue [Abstract]
Revenue	385,069	346,269	340,327
Color [Member] | Personal Care [Member]
Revenue [Abstract]
Revenue	158,237	141,331	159,640
Color [Member] | Inks [Member]
Revenue [Abstract]
Revenue	1,964	13,418	35,192
Color [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	0	0	0
Asia Pacific [Member]
Revenue [Abstract]
Revenue	134,950	120,982	118,178
Asia Pacific [Member] | Flavors, Extracts & Flavor Ingredients [Member]
Revenue [Abstract]
Revenue	0	0	0
Asia Pacific [Member] | Natural Ingredients [Member]
Revenue [Abstract]
Revenue	0	0	0
Asia Pacific [Member] | Fragrances [Member]
Revenue [Abstract]
Revenue	0	0	0
Asia Pacific [Member] | Yogurt Fruit Preparations [Member]
Revenue [Abstract]
Revenue	0	0	0
Asia Pacific [Member] | Food & Pharmaceutical Colors [Member]
Revenue [Abstract]
Revenue	0	0	0
Asia Pacific [Member] | Personal Care [Member]
Revenue [Abstract]
Revenue	0	0	0
Asia Pacific [Member] | Inks [Member]
Revenue [Abstract]
Revenue	0	0	0
Asia Pacific [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	135,348	121,227	118,248
Intersegment Revenue [Member]
Revenue [Abstract]
Revenue	39,781	32,279	30,829
Intersegment Revenue [Member] | Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	21,739	17,552	17,651
Intersegment Revenue [Member] | Color [Member]
Revenue [Abstract]
Revenue	17,644	14,482	13,108
Intersegment Revenue [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	$ 398	$ 245	$ 70