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Note 18 - Contingencies (Details Textual) - Loss Contingency, Obligation for Sales and Use Tax [Member] $ in Millions | Aug. 09, 2021 USD ($)
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Loss Contingency, Potential Obligation | $ 1.0
Loss Contingency Accrual, Payments | $ 0.4

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- Definition Describes the form and magnitude of the amount of the potential obligation. + References No definition available. + Details
Name: | aaoi_LossContingencyPotentialObigation
Namespace Prefix: | aaoi_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of cash outflow reducing loss contingency liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-1 + Details
Name: | us-gaap_LossContingencyAccrualPayments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=aaoi_LossContingencyObligationForSalesAndUseTaxMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |