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Nature of Operations and Summary of Significant Accounting Policies - Contract Assets, Receivables, and Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Receivables (included in Trade receivables)	$ 1,055,133		$ 1,055,133		$ 946,938
Contract asset - Short term	1,095		1,095		$ 487
Revenues	1,291,568	$ 920,016	2,588,970	$ 1,850,944
Flavor Compounds
Disaggregation of Revenue [Line Items]
Revenues	729,279	450,540	1,449,481	899,559
Fragrance Compounds
Disaggregation of Revenue [Line Items]
Revenues	375,696	372,034	764,807	750,666
Ingredients
Disaggregation of Revenue [Line Items]
Revenues	$ 186,593	$ 97,442	$ 374,682	$ 200,719

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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