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Summary of Business Sales Segmentation as per Product (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net Sales:
Total crop	$ 59,521us-gaap_SalesRevenueGoodsNet	$ 73,175us-gaap_SalesRevenueGoodsNet
Non-crop	7,044avd_SalesOfNonCropProducts	7,920avd_SalesOfNonCropProducts
Net sales	66,565us-gaap_SalesRevenueNet	81,095us-gaap_SalesRevenueNet
Insecticides
Net Sales:
Total crop	34,359us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = avd_AmountOfInsecticidesSoldMember	46,437us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = avd_AmountOfInsecticidesSoldMember
Herbicides/Soil Fumigants/Fungicides
Net Sales:
Total crop	21,840us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = avd_AmountOfHerbicidesSoldMember	22,931us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = avd_AmountOfHerbicidesSoldMember
Other, Including Plant Growth Regulators
Net Sales:
Total crop	$ 3,322us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember	$ 3,807us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember

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- Definition

Sales of non crop products.

+ References

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(a))

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



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