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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, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | $ 1,198,773 | $ 1,291,568 | $ 2,546,090 | $ 2,588,970 |
Receivables (included in Trade receivables) | 982,624 |  | 982,624 |  | $ 892,625
Contract asset - Short term | 919 |  | 919 |  | 2,736
Contract liabilities - Short term | 4,223 |  | $ 4,223 |  | 11,107
Percentage of outstanding receivables less than 90 days |  |  | 85.00% |  |
Trade receivables (net of allowances of $21,056 and $16,428, respectively) | 961,568 |  | $ 961,568 |  | $ 876,197
Flavor Compounds |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 748,324 | 811,319 | 1,578,646 | 1,616,121 |
Fragrance Compounds |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 450,449 | 480,249 | 967,444 | 972,849 |
Flavor compounds | Flavor Compounds |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 654,781 | 710,251 | 1,388,478 | 1,415,013 |
Flavor ingredients | Flavor Compounds |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 93,543 | 101,068 | 190,168 | 201,108 |
Fragrance ingredients | Fragrance Compounds |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 92,292 | 104,367 | 201,109 | 207,671 |
Fragrance compounds | Fragrance Compounds |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | $ 358,157 | $ 375,882 | $ 766,335 | $ 765,178 |

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