Segment and Geographic Information, Reportable Segments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) Segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Segment and Geographic Information [Abstract]
Number of reportable segment | Segment	3
Revenue [Abstract]
Revenue	$ 1,437,039	$ 1,380,264	$ 1,332,001
Operating income (loss)	196,751	170,028	152,656
Interest expense	14,547	12,544	14,811
Earnings before income taxes	182,204	157,484	137,845
Assets	1,981,614	1,745,493	1,740,860
Capital expenditures	79,322	60,788	52,162
Depreciation and amortization	52,467	52,051	49,641
Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	710,592	717,688	724,483
Operating income (loss)	105,424	98,660	90,974
Interest expense	0	0	0
Earnings before income taxes	105,424	98,660	90,974
Assets	738,181	639,992	686,348
Capital expenditures	40,805	35,846	24,541
Depreciation and amortization	26,660	26,020	24,801
Color [Member]
Revenue [Abstract]
Revenue	583,379	527,626	486,536
Operating income (loss)	114,619	103,575	96,034
Interest expense	0	0	0
Earnings before income taxes	114,619	103,575	96,034
Assets	849,425	738,139	718,665
Capital expenditures	30,300	16,806	19,840
Depreciation and amortization	20,174	20,572	19,368
Asia Pacific [Member]
Revenue [Abstract]
Revenue	143,068	134,950	120,982
Operating income (loss)	29,492	26,330	22,075
Interest expense	0	0	0
Earnings before income taxes	29,492	26,330	22,075
Assets	115,132	108,126	100,258
Capital expenditures	2,164	2,813	2,687
Depreciation and amortization	2,489	2,748	2,578
Reportable Segments [Member]
Revenue [Abstract]
Revenue	1,485,601	1,420,045	1,364,280
Reportable Segments [Member] | Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	738,003	739,427	742,035
Reportable Segments [Member] | Color [Member]
Revenue [Abstract]
Revenue	604,017	545,270	501,018
Reportable Segments [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	143,581	135,348	121,227
Intersegment Revenue [Member]
Revenue [Abstract]
Revenue	48,562	39,781	32,279
Intersegment Revenue [Member] | Flavors & Extracts [Member]
Revenue [Abstract]
Revenue	27,411	21,739	17,552
Intersegment Revenue [Member] | Color [Member]
Revenue [Abstract]
Revenue	20,638	17,644	14,482
Intersegment Revenue [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue	513	398	245
Corporate & Other [Member]
Revenue [Abstract]
Revenue	0	0	0
Operating income (loss)	(52,784)	(58,537)	(56,427)
Interest expense	14,547	12,544	14,811
Earnings before income taxes	(67,331)	(71,081)	(71,238)
Assets	278,876	259,236	235,589
Capital expenditures	6,053	5,323	5,094
Depreciation and amortization	$ 3,144	$ 2,711	$ 2,894