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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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