Segment Information, Revenue from External Customers by Product Line (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue [Abstract]
Revenue	$ 361,076	$ 344,287	$ 1,088,303	$ 1,039,816
Flavors, Extracts & Flavor Ingredients [Member]
Revenue [Abstract]
Revenue	123,945	116,140	381,041	347,642
Natural Ingredients [Member]
Revenue [Abstract]
Revenue	63,101	64,215	178,069	186,721
Fragrances [Member]
Revenue [Abstract]
Revenue				22,739
Yogurt Fruit Preparations [Member]
Revenue [Abstract]
Revenue		1,312		4,877
Food & Pharmaceutical Colors [Member]
Revenue [Abstract]
Revenue	111,194	99,688	328,087	287,565
Personal Care [Member]
Revenue [Abstract]
Revenue	39,689	39,241	126,651	119,079
Inks [Member]
Revenue [Abstract]
Revenue	586	310	1,437	1,522
Asia Pacific [Member]
Revenue [Abstract]
Revenue	35,221	33,442	109,014	99,599
Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	181,397	175,690	539,014	545,050
Flavors & Extracts [Member] | Flavors, Extracts & Flavor Ingredients [Member]
Revenue [Abstract]
Revenue	123,945	116,140	381,041	347,642
Flavors & Extracts [Member] | Natural Ingredients [Member]
Revenue [Abstract]
Revenue	63,101	64,215	178,069	186,721
Flavors & Extracts [Member] | Fragrances [Member]
Revenue [Abstract]
Revenue				22,739
Flavors & Extracts [Member] | Yogurt Fruit Preparations [Member]
Revenue [Abstract]
Revenue		1,312		4,877
Color [Member]
Revenue [Abstract]
Revenue	144,570	135,395	440,568	395,426
Color [Member] | Food & Pharmaceutical Colors [Member]
Revenue [Abstract]
Revenue	111,194	99,688	328,087	287,565
Color [Member] | Personal Care [Member]
Revenue [Abstract]
Revenue	39,689	39,241	126,651	119,079
Color [Member] | Inks [Member]
Revenue [Abstract]
Revenue	586	310	1,437	1,522
Asia Pacific [Member]
Revenue [Abstract]
Revenue	35,109	33,202	108,721	99,340
Asia Pacific [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	35,221	33,442	109,014	99,599
Intersegment Revenue [Member]
Revenue [Abstract]
Revenue	12,660	10,061	35,996	29,928
Intersegment Revenue [Member] | Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	5,649	5,977	20,096	16,929
Intersegment Revenue [Member] | Color [Member]
Revenue [Abstract]
Revenue	6,899	3,844	15,607	12,740
Intersegment Revenue [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	$ 112	$ 240	$ 293	$ 259