Segment Information, Revenue from External Customers by Product Line (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue [Abstract]
Revenue	$ 369,006	$ 355,521
Flavors, Extracts & Flavor Ingredients [Member]
Revenue [Abstract]
Revenue	124,825	126,518
Natural Ingredients [Member]
Revenue [Abstract]
Revenue	54,027	56,209
Food & Pharmaceutical Colors [Member]
Revenue [Abstract]
Revenue	118,747	103,109
Personal Care [Member]
Revenue [Abstract]
Revenue	42,414	44,846
Inks [Member]
Revenue [Abstract]
Revenue		483
Asia Pacific [Member]
Revenue [Abstract]
Revenue	40,085	36,465
Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	171,972	175,202
Flavors & Extracts [Member] | Flavors, Extracts & Flavor Ingredients [Member]
Revenue [Abstract]
Revenue	124,825	126,518
Flavors & Extracts [Member] | Natural Ingredients [Member]
Revenue [Abstract]
Revenue	54,027	56,209
Flavors & Extracts [Member] | Food & Pharmaceutical Colors [Member]
Revenue [Abstract]
Revenue	0	0
Flavors & Extracts [Member] | Personal Care [Member]
Revenue [Abstract]
Revenue	0	0
Flavors & Extracts [Member] | Inks [Member]
Revenue [Abstract]
Revenue		0
Flavors & Extracts [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	0	0
Color [Member]
Revenue [Abstract]
Revenue	156,949	143,928
Color [Member] | Flavors, Extracts & Flavor Ingredients [Member]
Revenue [Abstract]
Revenue	0	0
Color [Member] | Natural Ingredients [Member]
Revenue [Abstract]
Revenue	0	0
Color [Member] | Food & Pharmaceutical Colors [Member]
Revenue [Abstract]
Revenue	118,747	103,109
Color [Member] | Personal Care [Member]
Revenue [Abstract]
Revenue	42,414	44,846
Color [Member] | Inks [Member]
Revenue [Abstract]
Revenue		483
Color [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	0	0
Asia Pacific [Member]
Revenue [Abstract]
Revenue	40,085	36,391
Asia Pacific [Member] | Flavors, Extracts & Flavor Ingredients [Member]
Revenue [Abstract]
Revenue	0	0
Asia Pacific [Member] | Natural Ingredients [Member]
Revenue [Abstract]
Revenue	0	0
Asia Pacific [Member] | Food & Pharmaceutical Colors [Member]
Revenue [Abstract]
Revenue	0	0
Asia Pacific [Member] | Personal Care [Member]
Revenue [Abstract]
Revenue	0	0
Asia Pacific [Member] | Inks [Member]
Revenue [Abstract]
Revenue		0
Asia Pacific [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	40,085	36,465
Intersegment Revenue [Member]
Revenue [Abstract]
Revenue	11,092	12,109
Intersegment Revenue [Member] | Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	6,880	7,525
Intersegment Revenue [Member] | Color [Member]
Revenue [Abstract]
Revenue	4,212	4,510
Intersegment Revenue [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	$ 0	$ 74