Segment Information, Operating Results by Segment (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) Segment	Mar. 31, 2023 USD ($)
Segment Information [Abstract]
Number of reportable segments | Segment	3
Revenue [Abstract]
Revenue	$ 384,670	$ 369,006
Operating income (loss)	49,406	50,838
Interest expense	7,045	6,002
Earnings before income taxes	42,361	44,836
Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	188,022	171,972
Operating income (loss)	23,678	22,180
Interest expense	0	0
Earnings before income taxes	23,678	22,180
Color [Member]
Revenue [Abstract]
Revenue	156,364	156,949
Operating income (loss)	31,679	31,885
Interest expense	0	0
Earnings before income taxes	31,679	31,885
Asia Pacific [Member]
Revenue [Abstract]
Revenue	40,284	40,085
Operating income (loss)	8,776	9,241
Interest expense	0	0
Earnings before income taxes	8,776	9,241
Reportable Segments [Member]
Revenue [Abstract]
Revenue	393,423	380,098
Reportable Segments [Member] | Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	193,092	178,852
Reportable Segments [Member] | Color [Member]
Revenue [Abstract]
Revenue	160,025	161,161
Reportable Segments [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	40,306	40,085
Intersegment Revenue [Member]
Revenue [Abstract]
Revenue	8,753	11,092
Intersegment Revenue [Member] | Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	5,070	6,880
Intersegment Revenue [Member] | Color [Member]
Revenue [Abstract]
Revenue	3,661	4,212
Intersegment Revenue [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	22	0
Corporate & Other [Member] | Corporate and Other [Member]
Revenue [Abstract]
Revenue	0	0
Operating income (loss)	(14,727)	(12,468)
Interest expense	7,045	6,002
Earnings before income taxes	$ (21,772)	$ (18,470)