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Major Customers and Export Sales - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Customer One
Segment Reporting Information [Line Items]
Percentage of customer receivables	21.00%avd_EntityWideTradeReceivablesMajorCustomerPercentage / us-gaap_MajorCustomersAxis = avd_CustomerOneMember	14.00%avd_EntityWideTradeReceivablesMajorCustomerPercentage / us-gaap_MajorCustomersAxis = avd_CustomerOneMember	20.00%avd_EntityWideTradeReceivablesMajorCustomerPercentage / us-gaap_MajorCustomersAxis = avd_CustomerOneMember
Customer Two
Segment Reporting Information [Line Items]
Percentage of customer receivables	12.00%avd_EntityWideTradeReceivablesMajorCustomerPercentage / us-gaap_MajorCustomersAxis = avd_CustomerTwoMember	10.00%avd_EntityWideTradeReceivablesMajorCustomerPercentage / us-gaap_MajorCustomersAxis = avd_CustomerTwoMember	11.00%avd_EntityWideTradeReceivablesMajorCustomerPercentage / us-gaap_MajorCustomersAxis = avd_CustomerTwoMember
Customer Three
Segment Reporting Information [Line Items]
Percentage of customer receivables	10.00%avd_EntityWideTradeReceivablesMajorCustomerPercentage / us-gaap_MajorCustomersAxis = avd_CustomerThreeMember	8.00%avd_EntityWideTradeReceivablesMajorCustomerPercentage / us-gaap_MajorCustomersAxis = avd_CustomerThreeMember	7.00%avd_EntityWideTradeReceivablesMajorCustomerPercentage / us-gaap_MajorCustomersAxis = avd_CustomerThreeMember
Customer Concentration Risk | Sales | Customer One
Segment Reporting Information [Line Items]
Percentage to company consolidated sales	20.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = avd_CustomerOneMember	17.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = avd_CustomerOneMember	19.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = avd_CustomerOneMember
Customer Concentration Risk | Sales | Customer Two
Segment Reporting Information [Line Items]
Percentage to company consolidated sales	11.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = avd_CustomerTwoMember	13.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = avd_CustomerTwoMember	10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = avd_CustomerTwoMember
Customer Concentration Risk | Sales | Customer Three
Segment Reporting Information [Line Items]
Percentage to company consolidated sales	8.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = avd_CustomerThreeMember	8.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = avd_CustomerThreeMember	8.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = avd_CustomerThreeMember

X

- Definition

Entity Wide Trade Receivables Major Customer Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	avd_
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X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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- Details

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- Details

Name:	us-gaap_MajorCustomersAxis=avd_CustomerThreeMember
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- Details

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