Litigation and Environmental - Additional Information (Detail) $ in Thousands			1 Months Ended	12 Months Ended
	Mar. 29, 2016 Case	May 31, 2012 Case Plaintiff Person	Jan. 31, 2017 USD ($) Case	Dec. 31, 2018 USD ($) Case Plaintiff Person
United States Lawsuits
Loss Contingencies [Line Items]
Number of lawsuits				3
U.S. State District Court Abad Castillo And Marquinez
Loss Contingencies [Line Items]
Number of Lawsuits Filed		2
Number of claimants | Person		2,700
U.S. State District Court Abad Castillo | Hendler Law Firm
Loss Contingencies [Line Items]
Number of plaintiffs required to be dismissed | Plaintiff		22
Number of plaintiffs dismissed		14
Superior Court Abad Castillo And Marquinez
Loss Contingencies [Line Items]
Number of Lawsuits Filed		57
Chaverri
Loss Contingencies [Line Items]
Number of claimants | Person				258
Harold Reed v. AMVAC et al.
Loss Contingencies [Line Items]
Number of lawsuits filed	2
Reed
Loss Contingencies [Line Items]
Loss contingency damages sought, value | $			$ 250
Jem Holdings
Loss Contingencies [Line Items]
Loss contingency damages sought, value | $			$ 60
Cross Claims
Loss Contingencies [Line Items]
Number of lawsuits filed			4
Van Giessen Growers, Inc.
Loss Contingencies [Line Items]
Loss contingency estimate of possible loss | $			$ 400
Chin Coulee Farms
Loss Contingencies [Line Items]
Loss contingency estimate of possible loss | $			530
Houweling Farms
Loss Contingencies [Line Items]
Loss contingency estimate of possible loss | $			$ 4,300
Nicaraguan
Loss Contingencies [Line Items]
Number of claimants | Plaintiff				3,592
Nicaraguan | Special Law
Loss Contingencies [Line Items]
Number of lawsuits filed				2
Number of claimants | Plaintiff				57
Nicaraguan | Public Law
Loss Contingencies [Line Items]
Number of lawsuits filed				85
Nicaraguan | Compensatory Damages
Loss Contingencies [Line Items]
Value of claims paid | $				$ 1,000
Nicaraguan | Punitive Damages
Loss Contingencies [Line Items]
Value of claims paid | $				$ 5,000