Segment Information, Operating Results by Segment (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) Segment	Jun. 30, 2022 USD ($)
Segment Information [Abstract]
Number of reportable segments \| Segment			3
Revenue [Abstract]
Revenue	$ 374,313	$ 371,706	$ 743,319	$ 727,227
Operating income (loss)	51,591	55,244	102,429	108,033
Interest expense	6,352	3,083	12,354	6,076
Earnings before income taxes	45,239	52,161	90,075	101,957
Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	181,752	182,415	353,724	357,617
Operating income (loss)	24,456	30,013	46,636	57,592
Interest expense	0	0	0	0
Earnings before income taxes	24,456	30,013	46,636	57,592
Color [Member]
Revenue [Abstract]
Revenue	156,532	152,070	313,481	295,998
Operating income (loss)	29,217	31,178	61,102	61,835
Interest expense	0	0	0	0
Earnings before income taxes	29,217	31,178	61,102	61,835
Asia Pacific [Member]
Revenue [Abstract]
Revenue	36,029	37,221	76,114	73,612
Operating income (loss)	7,575	7,721	16,816	15,925
Interest expense	0	0	0	0
Earnings before income taxes	7,575	7,721	16,816	15,925
Reportable Segments [Member]
Revenue [Abstract]
Revenue	384,776	382,933	764,874	750,563
Reportable Segments [Member] \| Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	188,284	189,337	367,136	372,064
Reportable Segments [Member] \| Color [Member]
Revenue [Abstract]
Revenue	160,463	156,268	321,624	304,706
Reportable Segments [Member] \| Asia Pacific [Member]
Revenue [Abstract]
Revenue	36,029	37,328	76,114	73,793
Intersegment Revenue [Member]
Revenue [Abstract]
Revenue	10,463	11,227	21,555	23,336
Intersegment Revenue [Member] \| Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	6,532	6,922	13,412	14,447
Intersegment Revenue [Member] \| Color [Member]
Revenue [Abstract]
Revenue	3,931	4,198	8,143	8,708
Intersegment Revenue [Member] \| Asia Pacific [Member]
Revenue [Abstract]
Revenue	0	107	0	181
Corporate & Other [Member] \| Corporate and Other [Member]
Revenue [Abstract]
Revenue	0	0	0	0
Operating income (loss)	(9,657)	(13,668)	(22,125)	(27,319)
Interest expense	6,352	3,083	12,354	6,076
Earnings before income taxes	$ (16,009)	$ (16,751)	$ (34,479)	$ (33,395)

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