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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
	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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
-Paragraph 4
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-Name Accounting Standards Codification
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