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Employee Benefit Plans (Details) $ in Thousands | 12 Months Ended
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Jun. 30, 2020 USD ($)
United States |
Retirement Benefit Plan Disclosure [Line Items] |
Mandatory employer contributions according to labor and social security laws and regulations, percent | 7.70%
United States | Retirement Plan, 401-K [Member] |
Retirement Benefit Plan Disclosure [Line Items] |
Employee maximum salary deferral contribution, percent | 100.00%
Company contributions to retirement plan | $ 0
China | Minimum [Member] |
Retirement Benefit Plan Disclosure [Line Items] |
Mandatory employer contributions according to labor and social security laws and regulations, percent | 12.00%
China | Maximum [Member] |
Retirement Benefit Plan Disclosure [Line Items] |
Mandatory employer contributions according to labor and social security laws and regulations, percent | 16.00%
Taiwan |
Retirement Benefit Plan Disclosure [Line Items] |
Mandatory employer contributions according to labor and social security laws and regulations, percent | 6.00%

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- Definition Defined Contribution Plan, Maximum Annual Salary Deferral Contribution by Employee, Percent + References No definition available. + Details
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Namespace Prefix: | aosl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Mandatory Employer Contributions According to Labor and Social Security Laws and Regulations + References No definition available. + Details
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Namespace Prefix: | aosl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=country_TW
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |