Segment and Geographic Information, Segment and Geographic Info (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue [Abstract]
Revenue from external customers	$ 1,380,264	$ 1,332,001	$ 1,322,934
Long-lived assets	1,004,340	999,274	951,938
North America [Member]
Revenue [Abstract]
Revenue from external customers	787,107	733,330	700,098
Long-lived assets	624,766	600,404	552,673
Europe [Member]
Revenue [Abstract]
Revenue from external customers	278,229	289,980	307,631
Long-lived assets	317,875	339,264	344,942
Asia Pacific [Member]
Revenue [Abstract]
Revenue from external customers	221,566	199,921	205,979
Long-lived assets	37,689	36,708	35,782
Other [Member]
Revenue [Abstract]
Revenue from external customers	93,362	108,770	109,226
Long-lived assets	24,010	22,898	18,541
Flavors & Extracts [Member]
Revenue [Abstract]
Revenue from external customers	717,688	724,483	682,705
Long-lived assets	361,711	358,331	355,974
Color [Member]
Revenue [Abstract]
Revenue from external customers	527,626	486,536	522,051
Long-lived assets	504,553	506,532	484,829
Asia Pacific [Member]
Revenue [Abstract]
Revenue from external customers	134,950	120,982	118,178
Long-lived assets	32,901	31,834	31,007
Reportable Geographical Components [Member] | United States [Member]
Revenue [Abstract]
Revenue from external customers	658,000	614,300	575,200
Long-lived assets	550,300	518,200	471,800
Reportable Geographical Components [Member] | Flavors & Extracts [Member] | North America [Member]
Revenue [Abstract]
Revenue from external customers	523,960	491,641	448,393
Long-lived assets	268,934	244,921	251,822
Reportable Geographical Components [Member] | Flavors & Extracts [Member] | Europe [Member]
Revenue [Abstract]
Revenue from external customers	135,348	160,083	158,902
Long-lived assets	91,934	112,424	102,631
Reportable Geographical Components [Member] | Flavors & Extracts [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue from external customers	29,880	30,080	32,203
Long-lived assets	275	204	1,017
Reportable Geographical Components [Member] | Flavors & Extracts [Member] | Other [Member]
Revenue [Abstract]
Revenue from external customers	28,500	42,679	43,207
Long-lived assets	568	782	504
Reportable Geographical Components [Member] | Color [Member] | North America [Member]
Revenue [Abstract]
Revenue from external customers	263,031	241,608	251,593
Long-lived assets	250,682	252,906	220,723
Reportable Geographical Components [Member] | Color [Member] | Europe [Member]
Revenue [Abstract]
Revenue from external customers	142,741	129,704	148,393
Long-lived assets	225,916	226,840	242,311
Reportable Geographical Components [Member] | Color [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue from external customers	59,914	52,414	57,268
Long-lived assets	4,513	4,670	3,758
Reportable Geographical Components [Member] | Color [Member] | Other [Member]
Revenue [Abstract]
Revenue from external customers	61,940	62,810	64,797
Long-lived assets	23,442	22,116	18,037
Reportable Geographical Components [Member] | Asia Pacific [Member] | North America [Member]
Revenue [Abstract]
Revenue from external customers	116	81	112
Long-lived assets	0	0	0
Reportable Geographical Components [Member] | Asia Pacific [Member] | Europe [Member]
Revenue [Abstract]
Revenue from external customers	140	193	336
Long-lived assets	0	0	0
Reportable Geographical Components [Member] | Asia Pacific [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue from external customers	131,772	117,427	116,508
Long-lived assets	32,901	31,834	31,007
Reportable Geographical Components [Member] | Asia Pacific [Member] | Other [Member]
Revenue [Abstract]
Revenue from external customers	2,922	3,281	1,222
Long-lived assets	0	0	0
Intersegment Revenue [Member]
Revenue [Abstract]
Revenue from external customers	39,781	32,279	30,829
Intersegment Revenue [Member] | Flavors & Extracts [Member]
Revenue [Abstract]
Revenue from external customers	21,739	17,552	17,651
Intersegment Revenue [Member] | Color [Member]
Revenue [Abstract]
Revenue from external customers	17,644	14,482	13,108
Intersegment Revenue [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue from external customers	398	245	70
Corporate & Other [Member]
Revenue [Abstract]
Revenue from external customers	0	0	0
Long-lived assets	105,175	102,577	80,128
Corporate & Other [Member] | North America [Member]
Revenue [Abstract]
Revenue from external customers	0	0	0
Long-lived assets	105,150	102,577	80,128
Corporate & Other [Member] | Europe [Member]
Revenue [Abstract]
Revenue from external customers	0	0	0
Long-lived assets	25	0	0
Corporate & Other [Member] | Asia Pacific [Member]
Revenue [Abstract]
Revenue from external customers	0	0	0
Long-lived assets	0	0	0
Corporate & Other [Member] | Other [Member]
Revenue [Abstract]
Revenue from external customers	0	0	0
Long-lived assets	$ 0	$ 0	$ 0