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Reclassification | 9 Months Ended
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Sep. 30, 2013
Reclassification | 9. Reclassification—certain items may have been reclassified (if appropriate), in the prior period consolidated financial statements to conform to the most recent financial statements presented.

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- Definition Disclosure of certain items which may have been reclassified (if appropriate), in the prior period consolidated financial statements to conform with the current presentation. + References No definition available. + Details
Name: | avd_DisclosureOfReclassificationTextBlock
Namespace Prefix: | avd_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration