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Summary of Business Sales Segmentation as per Location (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net Sales:
Net sales	$ 66,565us-gaap_SalesRevenueNet	$ 81,095us-gaap_SalesRevenueNet
US
Net Sales:
Net sales	49,222us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = avd_DomesticSalesMember	57,956us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = avd_DomesticSalesMember
International
Net Sales:
Net sales	$ 17,343us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = avd_ForeignSalesMember	$ 23,139us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = avd_ForeignSalesMember

X

- 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

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)

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



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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Balance Type:	credit
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- Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=avd_ForeignSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: