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Litigation and Environmental - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended								12 Months Ended		1 Months Ended					1 Months Ended			12 Months Ended				1 Months Ended	12 Months Ended	1 Months Ended			12 Months Ended			12 Months Ended
	Sep. 30, 2012 Claimant	Oct. 05, 2009	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2011	Dec. 31, 2012 PCNB	Mar. 31, 2011 Minimum	Mar. 31, 2011 Maximum	Dec. 31, 2012 Louisiana Case	Dec. 31, 2012 Louisiana Superior Court Case	Jun. 01, 2011 Louisiana Federal Case	Nov. 30, 1999 Louisiana State Person Case	Dec. 01, 2006 Nicaraguan Plaintiff	Aug. 31, 2005 Nicaraguan Plaintiff	Oct. 20, 2009 Nicaraguan	Nov. 30, 1999 Ecuador Louisiana State Person	Nov. 30, 1999 Costa Rica Louisiana State Person	Nov. 30, 1999 Guatemala Louisiana State Person	Dec. 31, 2012 HendlerLaw, P.C. Plaintiff	Dec. 31, 2012 HendlerLaw, P.C. Louisiana Case	Dec. 31, 2012 HendlerLaw, P.C. Delaware Cases Case	Dec. 31, 2012 HendlerLaw, P.C. Delaware Cases Superior Court Case	Aug. 21, 2012 HendlerLaw, P.C. Delaware Cases US State District Court Case	Dec. 31, 2012 HendlerLaw, P.C. Delaware Cases US State District Court Case	Oct. 31, 1997 Former Banana Workers Plaintiff Country	Dec. 31, 2005 Former Banana Workers Nicaraguan Case Person	May 31, 2005 Former Banana Workers Nicaraguan Person Case	Dec. 31, 2012 Former Banana Workers Nicaraguan Case Plaintiff	Dec. 31, 2012 Former Banana Workers Nicaraguan Public Law Case	Dec. 31, 2012 Former Banana Workers Nicaraguan Special Law Case	Dec. 31, 2012 Former Banana Workers Nicaraguan Compensatory Damages	Dec. 31, 2012 Former Banana Workers Nicaraguan Punitive Damages	Dec. 31, 2012 Former Banana Workers Nicaraguan Nicaragua Domestic Suits Case	Dec. 31, 2012 Former Banana Workers Nicaraguan All Other Suits Case	Dec. 31, 2012 Former Banana Workers HendlerLaw, P.C. Delaware Cases Person Case	Dec. 31, 2012 Former Banana Workers HendlerLaw, P.C. Delaware Cases US State District Court Person
Loss Contingencies [Line Items]
Inventories			$ 87,951	$ 71,068		$ 19,974
Number of lawsuits																										6	2	100					3	2
Lawsuits Filed In Country											7																	15
Lawsuits pending amount																												97,000
Number of dismissed complaints									6	3									22	7			6
Number of Lawsuits Filed																					9	1		8
Number of labor cases pending																																			2
Number of claimants																																			2,700	235
Legal Proceedings Number Of Personal Injuries												314				167	102	45			2			6
Number of Claimants Involved in Case	14
Number of Claimants Not Involved in Case	8
Number of claimants													1,200	150											10	30	15	3,592
Number Of Countries																									4
Number of Lawsuits Filed												3																	85	2
Value of claims paid																															1,000	5,000
Value of Nicaraguan judgment													802,000	97,000	97,000
Potential value of fine against AMVAC		200
Amount set up for the loss contingency					150
Probable contingency Loss							$ 150	$ 200

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Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer).

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