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Segment and Geographic Information - Long-lived Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025
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Revenues from External Customers and Long-Lived Assets |  |
Property, plant and equipment, net and land use rights, net | $ 333,005 | $ 335,385
China |  |
Revenues from External Customers and Long-Lived Assets |  |
Property, plant and equipment, net and land use rights, net | 100,334 | 99,389
United States |  |
Revenues from External Customers and Long-Lived Assets |  |
Property, plant and equipment, net and land use rights, net | 227,245 | 230,518
Other countries |  |
Revenues from External Customers and Long-Lived Assets |  |
Property, plant and equipment, net and land use rights, net | $ 5,426 | $ 5,478

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- Definition Long-Lived Assets, Net Consisting Of Property, Plant And Equipment And Operating + References No definition available. + Details
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Namespace Prefix: | aosl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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- Details
Name: | srt_StatementGeographicalAxis=country_CN
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementGeographicalAxis=aosl_OtherCountriesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |