Loss contingency appeal for dismiss number.

No definition available.

Name:	avd_LossContingencyAppealForDismissNumber
Namespace Prefix:	avd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Stunted growth value.

+ References

No definition available.

+ Details

Name:	avd_StuntedGrowthValue
Namespace Prefix:	avd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349

+ Details

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

+ References

+ Details

Name:	us-gaap_LossContingencyNumberOfPlaintiffs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_LitigationCaseAxis=avd_UnitedStatesDistrictCourtDelawareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=avd_HendlerLawFirmMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=avd_CountryOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=avd_PublicMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Litigation and Environmental - Additional Information (Detail) $ in Millions		12 Months Ended
	Feb. 11, 2022 USD ($)	Dec. 31, 2022 Case Plaintiff
Loss Contingencies [Line Items]
Stunted Growth Value \| $	$ 5
United States District Court Delaware
Loss Contingencies [Line Items]
Number of plaintiffs required to be dismissed		290
United States District Court Delaware \| Hendler Law Firm
Loss Contingencies [Line Items]
Number of plaintiffs required to be dismissed		2,750
Nicaraguan
Loss Contingencies [Line Items]
Number of claimants		3,592
Nicaraguan \| Public Law
Loss Contingencies [Line Items]
Number of lawsuits filed \| Case		85