Consolidated funded debt ratio.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility covenant consolidated current assets to consolidated current liabilities ratio.

+ References

No definition available.

+ Details

Name:	avd_LineOfCreditFacilityCovenantConsolidatedCurrentAssetsToConsolidatedCurrentLiabilitiesRatio
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Data Type:	num:percentItemType
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Period Type:	instant

- Definition

Line Of Credit Facility Maturity Date

+ References

No definition available.

+ Details

Name:	avd_LineOfCreditFacilityMaturityDate
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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationPeriod
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Namespace Prefix:
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Period Type:

- Details

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Data Type:	na
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Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
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Summary of Long Term Debt (Parenthetical) (Detail) - USD ($)	3 Months Ended				12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016
Debt Instrument [Line Items]
Consolidated funded debt ratio	350.00%	350.00%	350.00%	325.00%
Ratio of consolidated current assets to consolidated current liabilities					120.00%
Senior secured credit facility term					5 years
Senior secured credit facility, maturity date					Jun. 17, 2018
Maximum \| Term Loan
Debt Instrument [Line Items]
Accordion feature					$ 100,000,000
Revolving Line of Credit
Debt Instrument [Line Items]
Senior secured credit facility					$ 200,000,000