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Schedule of Company's Obligations Under Product Acquisitions and Licensing Agreements (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition, Contingent Consideration [Line Items]
Beginning Balance	$ 3,886us-gaap_AssetRetirementObligationsNoncurrent	$ 11,900us-gaap_AssetRetirementObligationsNoncurrent	$ 17,624us-gaap_AssetRetirementObligationsNoncurrent
Additional obligations acquired			1,073avd_AssetRetirementObligationLiabilitiesAddedFromAcquisitions
Adjustment to deferred liabilities	(32)us-gaap_AssetRetirementObligationPeriodIncreaseDecrease	(297)us-gaap_AssetRetirementObligationPeriodIncreaseDecrease	(216)us-gaap_AssetRetirementObligationPeriodIncreaseDecrease
FX impact		(1)avd_AssetRetirementObligationsGainLoss	48avd_AssetRetirementObligationsGainLoss
Amortization of discounted liabilities	324avd_AssetRetirementObligationOther	174avd_AssetRetirementObligationOther	818avd_AssetRetirementObligationOther
Payments on existing obligations	(1,686)us-gaap_AssetRetirementObligationAccretionExpense	(7,890)us-gaap_AssetRetirementObligationAccretionExpense	(7,447)us-gaap_AssetRetirementObligationAccretionExpense
Ending Balance	$ 2,492us-gaap_AssetRetirementObligationsNoncurrent	$ 3,886us-gaap_AssetRetirementObligationsNoncurrent	$ 11,900us-gaap_AssetRetirementObligationsNoncurrent

X

- Definition

Asset Retirement Obligation Liabilities Added From Acquisitions

+ References

No definition available.

+ Details

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- Definition

Asset Retirement Obligation, Other

+ References

No definition available.

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Balance Type:	debit
Period Type:	duration

X

- Definition

Asset Retirement Obligations Gain Loss

+ References

No definition available.

+ Details

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Namespace Prefix:	avd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- Definition

Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	duration

X

- Definition

Net Increase or Decrease in the asset retirement obligation during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

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- Definition

Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

+ Details

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