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Summary of Business Sales by Product and Geographic Location (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Net sales |  |  |  |
Net sales | $ 89,975 | $ 82,447 | $ 238,553 | $ 224,645
Insecticides |  |  |  |
Net sales |  |  |  |
Net sales | 24,866 | 25,478 | 102,249 | 89,496
Herbicides/Soil Fumigants/Fungicides |  |  |  |
Net sales |  |  |  |
Net sales | 32,717 | 34,242 | 68,783 | 80,009
Other, Including Plant Growth Regulators |  |  |  |
Net sales |  |  |  |
Net sales | 17,191 | 13,328 | 30,680 | 23,148
Crop |  |  |  |
Net sales |  |  |  |
Net sales | 74,774 | 73,048 | 201,712 | 192,653
Non-Crop |  |  |  |
Net sales |  |  |  |
Net sales | 15,201 | 9,399 | 36,841 | 31,992
US |  |  |  |
Net sales |  |  |  |
Net sales | 65,842 | 60,033 | 173,877 | 161,661
International |  |  |  |
Net sales |  |  |  |
Net sales | $ 24,133 | $ 22,414 | $ 64,676 | $ 62,984

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