Goodwill and Intangible Assets, Goodwill (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Goodwill activity [Roll Forward]
Balance as of beginning of period		$ 407,042	$ 416,175
Currency translation impact		14,050	(748)
Goodwill related to divestitures	[1]		(8,385)
Goodwill related to divestitures	[2]	2,198
Balance as of end of period		423,290	407,042
Flavors & Extracts [Member]
Goodwill activity [Roll Forward]
Balance as of beginning of period		108,148	112,086
Currency translation impact		3,565	(184)
Goodwill related to divestitures	[1]		(3,754)
Goodwill related to divestitures	[2]	657
Balance as of end of period		112,370	108,148
Color [Member]
Goodwill activity [Roll Forward]
Balance as of beginning of period		293,636	298,908
Currency translation impact		10,086	(641)
Goodwill related to divestitures	[1]		(4,631)
Goodwill related to divestitures	[2]	1,541
Balance as of end of period		305,263	293,636
Asia Pacific [Member]
Goodwill activity [Roll Forward]
Balance as of beginning of period		5,258	5,181
Currency translation impact		399	77
Goodwill related to divestitures	[1]		0
Goodwill related to divestitures	[2]	0
Balance as of end of period		$ 5,657	$ 5,258

[1] In the fourth quarter of 2019, the Company met all of the assets held for sale criteria related to the divestitures of its inks product line and fragrances product line (excluding its essential oils product line). Goodwill of $8.4 million was allocated to those disposal groups and was determined to be fully impaired based on the estimated fair value of each of the disposal groups. See Note 14, Divestitures, for additional information.

[2] In 2020, the fair value of the disposal groups decreased, which resulted in the previously allocated goodwill of $2.2 million to be reallocated to its respective financial reporting units. See Note 14, Divestitures, for additional information.