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Revenue Recognition - Summary of Selective Enterprise Information of Sales Disaggregated By Category and Geographic Region (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Disaggregation Of Revenue [Line Items] |  |
Net sales | $ 99,676 | $ 104,108
Insecticides |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 40,183 |
Herbicides/Soil Fumigants/Fungicides |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 31,535 |
Other, Including Plant Growth Regulators and Distribution |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 15,670 |
Crop |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 87,388 |
Non-crop, Including Distribution |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 12,288 |
US |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 61,537 | 69,236
US | Crop |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 50,270 | 57,344
International |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 38,139 | $ 34,872
Balances without adoption of ASC 606 |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 99,724 |
Balances without adoption of ASC 606 | Insecticides |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 40,231 |
Balances without adoption of ASC 606 | Herbicides/Soil Fumigants/Fungicides |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 31,535 |
Balances without adoption of ASC 606 | Other, Including Plant Growth Regulators and Distribution |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 15,670 |
Balances without adoption of ASC 606 | Crop |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 87,436 |
Balances without adoption of ASC 606 | Non-crop, Including Distribution |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 12,288 |
Balances without adoption of ASC 606 | US |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 61,585 |
Balances without adoption of ASC 606 | International |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 38,139 |
Goods Transferred at a Point in Time |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 99,297 |
Goods Transferred at a Point in Time | Balances without adoption of ASC 606 |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | 99,724 |
Goods and Services Transferred Over Time |  |
Disaggregation Of Revenue [Line Items] |  |
Net sales | $ 379 |

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