Segment Information, Operating Results by Segment (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) Segment	Sep. 30, 2021 USD ($)
Segment Information [Abstract]
Number of reportable segments | Segment			3
Revenue [Abstract]
Revenue	$ 361,076	$ 344,287	$ 1,088,303	$ 1,039,816
Operating income (loss)	47,493	46,958	155,526	129,608
Interest expense	3,672	3,037	9,748	9,792
Earnings (loss) before income taxes	43,821	43,921	145,778	119,816
Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	181,397	175,690	539,014	545,050
Operating income (loss)	26,337	25,164	83,929	76,718
Interest expense	0	0	0	0
Earnings (loss) before income taxes	26,337	25,164	83,929	76,718
Color [Member]
Revenue [Abstract]
Revenue	144,570	135,395	440,568	395,426
Operating income (loss)	28,200	27,253	90,035	79,462
Interest expense	0	0	0	0
Earnings (loss) before income taxes	28,200	27,253	90,035	79,462
Asia Pacific [Member]
Revenue [Abstract]
Revenue	35,109	33,202	108,721	99,340
Operating income (loss)	6,952	6,601	22,877	19,146
Interest expense	0	0	0	0
Earnings (loss) before income taxes	6,952	6,601	22,877	19,146
Reportable Segments [Member]
Revenue [Abstract]
Revenue	373,736	354,348	1,124,299	1,069,744
Reportable Segments [Member] | Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	187,046	181,667	559,110	561,979
Reportable Segments [Member] | Color [Member]
Revenue [Abstract]
Revenue	151,469	139,239	456,175	408,166
Reportable Segments [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
Corporate & Other [Member]
Revenue [Abstract]
Revenue	0	0	0	0
Operating income (loss)	(13,996)	(12,060)	(41,315)	(45,718)
Interest expense	3,672	3,037	9,748	9,792
Earnings (loss) before income taxes	$ (17,668)	$ (15,097)	$ (51,063)	$ (55,510)