Segment Information, Operating Results by Segment (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) Segment	Jun. 30, 2023 USD ($)
Segment Information [Abstract]
Number of reportable segments \| Segment			3
Revenue [Abstract]
Revenue	$ 403,525	$ 374,313	$ 788,195	$ 743,319
Operating income (loss)	49,657	51,591	99,063	102,429
Interest expense	7,653	6,352	14,698	12,354
Earnings before income taxes	42,004	45,239	84,365	90,075
Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	202,020	181,752	390,042	353,724
Operating income (loss)	26,209	24,456	49,887	46,636
Interest expense	0	0	0	0
Earnings before income taxes	26,209	24,456	49,887	46,636
Color [Member]
Revenue [Abstract]
Revenue	162,925	156,532	319,289	313,481
Operating income (loss)	31,502	29,217	63,181	61,102
Interest expense	0	0	0	0
Earnings before income taxes	31,502	29,217	63,181	61,102
Asia Pacific [Member]
Revenue [Abstract]
Revenue	38,580	36,029	78,864	76,114
Operating income (loss)	7,880	7,575	16,656	16,816
Interest expense	0	0	0	0
Earnings before income taxes	7,880	7,575	16,656	16,816
Reportable Segments [Member]
Revenue [Abstract]
Revenue	415,493	384,776	808,916	764,874
Reportable Segments [Member] \| Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	209,213	188,284	402,305	367,136
Reportable Segments [Member] \| Color [Member]
Revenue [Abstract]
Revenue	167,700	160,463	327,725	321,624
Reportable Segments [Member] \| Asia Pacific [Member]
Revenue [Abstract]
Revenue	38,580	36,029	78,886	76,114
Intersegment Revenue [Member]
Revenue [Abstract]
Revenue	11,968	10,463	20,721	21,555
Intersegment Revenue [Member] \| Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	7,193	6,532	12,263	13,412
Intersegment Revenue [Member] \| Color [Member]
Revenue [Abstract]
Revenue	4,775	3,931	8,436	8,143
Intersegment Revenue [Member] \| Asia Pacific [Member]
Revenue [Abstract]
Revenue	0	0	22	0
Corporate & Other [Member] \| Corporate and Other [Member]
Revenue [Abstract]
Revenue	0	0	0	0
Operating income (loss)	(15,934)	(9,657)	(30,661)	(22,125)
Interest expense	7,653	6,352	14,698	12,354
Earnings before income taxes	$ (23,587)	$ (16,009)	$ (45,359)	$ (34,479)

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