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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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation Of Revenue [Line Items]
Net sales	$ 113,104	$ 107,046	$ 212,780	$ 211,154
Insecticides
Disaggregation Of Revenue [Line Items]
Net sales	36,509		76,692
Herbicides/Soil Fumigants/Fungicides
Disaggregation Of Revenue [Line Items]
Net sales	37,203		68,738
Other, Including Plant Growth Regulators and Distribution
Disaggregation Of Revenue [Line Items]
Net sales	22,173		37,843
Crop
Disaggregation Of Revenue [Line Items]
Net sales	95,885		183,273
Non-crop, Including Distribution
Disaggregation Of Revenue [Line Items]
Net sales	17,219		29,507
US
Disaggregation Of Revenue [Line Items]
Net sales	64,530	64,363	126,067	134,178
US | Crop
Disaggregation Of Revenue [Line Items]
Net sales	47,311	51,760	96,560	108,785
International
Disaggregation Of Revenue [Line Items]
Net sales	48,574	$ 42,683	86,713	$ 76,976
Goods Transferred at a Point in Time
Disaggregation Of Revenue [Line Items]
Net sales	113,104		212,401
Goods and Services Transferred Over Time
Disaggregation Of Revenue [Line Items]
Net sales			379
Balances without adoption of ASC 606
Disaggregation Of Revenue [Line Items]
Net sales	113,110		212,810
Balances without adoption of ASC 606 | Insecticides
Disaggregation Of Revenue [Line Items]
Net sales	36,515		76,722
Balances without adoption of ASC 606 | Herbicides/Soil Fumigants/Fungicides
Disaggregation Of Revenue [Line Items]
Net sales	37,203		68,738
Balances without adoption of ASC 606 | Other, Including Plant Growth Regulators and Distribution
Disaggregation Of Revenue [Line Items]
Net sales	22,173		37,843
Balances without adoption of ASC 606 | Crop
Disaggregation Of Revenue [Line Items]
Net sales	95,891		183,303
Balances without adoption of ASC 606 | Non-crop, Including Distribution
Disaggregation Of Revenue [Line Items]
Net sales	17,219		29,507
Balances without adoption of ASC 606 | US
Disaggregation Of Revenue [Line Items]
Net sales	64,536		126,097
Balances without adoption of ASC 606 | International
Disaggregation Of Revenue [Line Items]
Net sales	48,574		86,713
Balances without adoption of ASC 606 | Goods Transferred at a Point in Time
Disaggregation Of Revenue [Line Items]
Net sales	$ 113,110		$ 212,810

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