Segment and Geographic Information, Revenue from External Customers by Products Line (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue [Abstract]
Revenue	$ 1,437,039	$ 1,380,264	$ 1,332,001
Flavors, Extracts & Flavor Ingredients [Member]
Revenue [Abstract]
Revenue	498,055	455,818	399,331
Natural Ingredients [Member]
Revenue [Abstract]
Revenue	239,948	255,772	243,161
Fragrances [Member]
Revenue [Abstract]
Revenue		22,739	85,354
Yogurt Fruit Preparations [Member]
Revenue [Abstract]
Revenue		5,098	14,189
Food & Pharmaceutical Colors [Member]
Revenue [Abstract]
Revenue	437,065	385,069	346,269
Personal Care [Member]
Revenue [Abstract]
Revenue	165,335	158,237	141,331
Inks [Member]
Revenue [Abstract]
Revenue	1,617	1,964	13,418
Asia Pacific [Member]
Revenue [Abstract]
Revenue	143,581	135,348	121,227
Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	710,592	717,688	724,483
Flavors & Extracts [Member] | Flavors, Extracts & Flavor Ingredients [Member]
Revenue [Abstract]
Revenue	498,055	455,818	399,331
Flavors & Extracts [Member] | Natural Ingredients [Member]
Revenue [Abstract]
Revenue	239,948	255,772	243,161
Flavors & Extracts [Member] | Fragrances [Member]
Revenue [Abstract]
Revenue		22,739	85,354
Flavors & Extracts [Member] | Yogurt Fruit Preparations [Member]
Revenue [Abstract]
Revenue		5,098	14,189
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	583,379	527,626	486,536
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
Color [Member] | Yogurt Fruit Preparations [Member]
Revenue [Abstract]
Revenue		0	0
Color [Member] | Food & Pharmaceutical Colors [Member]
Revenue [Abstract]
Revenue	437,065	385,069	346,269
Color [Member] | Personal Care [Member]
Revenue [Abstract]
Revenue	165,335	158,237	141,331
Color [Member] | Inks [Member]
Revenue [Abstract]
Revenue	1,617	1,964	13,418
Color [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	0	0	0
Asia Pacific [Member]
Revenue [Abstract]
Revenue	143,068	134,950	120,982
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
Asia Pacific [Member] | Yogurt Fruit Preparations [Member]
Revenue [Abstract]
Revenue		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	143,581	135,348	121,227
Intersegment Revenue [Member]
Revenue [Abstract]
Revenue	48,562	39,781	32,279
Intersegment Revenue [Member] | Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	27,411	21,739	17,552
Intersegment Revenue [Member] | Color [Member]
Revenue [Abstract]
Revenue	20,638	17,644	14,482
Intersegment Revenue [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	$ 513	$ 398	$ 245