Segment and Geographic Information, Reportable Segments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) Segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Segment and Geographic Information [Abstract]
Number of reportable segment | Segment	3
Revenue [Abstract]
Revenue	$ 1,456,450	$ 1,437,039	$ 1,380,264
Operating income (loss)	155,023	196,751	170,028
Interest expense	25,172	14,547	12,544
Earnings before income taxes	129,851	182,204	157,484
Assets	2,014,507	1,981,614	1,745,493
Capital expenditures	87,868	79,322	60,788
Depreciation and amortization	57,820	52,467	52,051
Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	716,049	710,592	717,688
Operating income (loss)	87,773	105,424	98,660
Interest expense	0	0	0
Earnings before income taxes	87,773	105,424	98,660
Assets	792,674	738,181	639,992
Capital expenditures	40,489	40,805	35,846
Depreciation and amortization	29,400	26,660	26,020
Color [Member]
Revenue [Abstract]
Revenue	594,316	583,379	527,626
Operating income (loss)	105,370	114,619	103,575
Interest expense	0	0	0
Earnings before income taxes	105,370	114,619	103,575
Assets	846,559	849,425	738,139
Capital expenditures	37,720	30,300	16,806
Depreciation and amortization	22,294	20,174	20,572
Asia Pacific [Member]
Revenue [Abstract]
Revenue	146,085	143,068	134,950
Operating income (loss)	30,800	29,492	26,330
Interest expense	0	0	0
Earnings before income taxes	30,800	29,492	26,330
Assets	112,335	115,132	108,126
Capital expenditures	2,923	2,164	2,813
Depreciation and amortization	2,548	2,489	2,748
Reportable Segments [Member]
Revenue [Abstract]
Revenue	1,495,121	1,485,601	1,420,045
Reportable Segments [Member] | Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	741,072	738,003	739,427
Reportable Segments [Member] | Color [Member]
Revenue [Abstract]
Revenue	607,959	604,017	545,270
Reportable Segments [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	146,090	143,581	135,348
Intersegment Revenue [Member]
Revenue [Abstract]
Revenue	38,671	48,562	39,781
Intersegment Revenue [Member] | Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	25,023	27,411	21,739
Intersegment Revenue [Member] | Color [Member]
Revenue [Abstract]
Revenue	13,643	20,638	17,644
Intersegment Revenue [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	5	513	398
Corporate & Other [Member] | Corporate and Other [Member]
Revenue [Abstract]
Revenue	0	0	0
Operating income (loss)	(68,920)	(52,784)	(58,537)
Interest expense	25,172	14,547	12,544
Earnings before income taxes	(94,092)	(67,331)	(71,081)
Assets	262,939	278,876	259,236
Capital expenditures	6,736	6,053	5,323
Depreciation and amortization	$ 3,578	$ 3,144	$ 2,711