$AOSL
ALPHA & OMEGA SEMICONDUCTOR Ltd Stock $aosl

$aosl Overview Financials Valuation SEC Filings Company Website

2021 Q2 Form 10-Q Financial Statement

#000138746721000043 Filed on May 07, 2021

Income Statement

Concept	2021 Q2	2021 Q1	2020 Q2
Revenue	$177.3M	$169.2M	$122.4M
YoY Change	44.86%	58.36%	9.38%
Cost Of Revenue	$116.7M	$116.5M	$93.50M
YoY Change	24.84%	38.07%	11.05%
Gross Profit	$60.58M	$52.69M	$28.90M
YoY Change	109.62%	134.61%	4.71%
Gross Profit Margin	34.17%	31.14%	23.61%
Selling, General & Admin	$20.94M	$19.34M	$17.10M
YoY Change	22.43%	14.37%	-2.84%
% of Gross Profit	34.56%	36.7%	59.17%
Research & Development	$17.28M	$15.56M	$13.20M
YoY Change	30.92%	14.65%	20.0%
% of Gross Profit	28.53%	29.52%	45.67%
Depreciation & Amortization	$13.26M	$13.74M	$11.55M
YoY Change	14.76%	16.54%	46.57%
% of Gross Profit	21.88%	26.08%	39.97%
Operating Expenses	$38.22M	$34.90M	$30.20M
YoY Change	26.55%	12.28%	5.59%
Operating Profit	$22.36M	$17.80M	-$1.300M
YoY Change	-1820.23%	-306.47%	30.0%
Interest Expense	-$1.107M	-$1.562M	-$200.0K
YoY Change	453.5%	-31.55%	-89.47%
% of Operating Profit	-4.95%	-8.78%
Other Income/Expense, Net
YoY Change
Pretax Income	$21.26M	$16.00M	-$1.600M
YoY Change	-1428.5%	-246.79%	-44.83%
Income Tax	$1.241M	$1.000M	$400.0K
% Of Pretax Income	5.84%	6.25%
Net Earnings	$19.54M	$16.10M	-$100.0K
YoY Change	-19639.0%	-347.88%	-104.0%
Net Earnings / Revenue	11.02%	9.51%	-0.08%
Basic Earnings Per Share		$0.62
Diluted Earnings Per Share	$705.3K	$0.58	-$3.968K
COMMON SHARES
Basic Shares Outstanding	26.09M shares	25.88M shares	25.08M shares
Diluted Shares Outstanding		27.72M shares

Balance Sheet

Concept	2021 Q2	2021 Q1	2020 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$202.4M	$192.1M	$158.5M
YoY Change	27.7%	74.32%	30.02%
Cash & Equivalents	$202.4M	$192.1M	$158.5M
Short-Term Investments
Other Short-Term Assets	$14.60M	$11.18M	$8.807M
YoY Change	65.72%	-67.6%	-76.26%
Inventory	$154.3M	$145.1M	$135.5M
Prepaid Expenses
Receivables	$35.79M	$33.72M	$13.27M
Other Receivables	$68.00K	$68.00K	$69.00K
Total Short-Term Assets	$407.3M	$382.4M	$318.3M
YoY Change	27.95%	30.97%	7.8%
LONG-TERM ASSETS
Property, Plant & Equipment	$437.0M	$432.6M	$412.3M
YoY Change	5.97%	4.91%	0.64%
Goodwill	$269.0K	$269.0K	$269.0K
YoY Change	0.0%	0.0%	0.0%
Intangibles	$13.14M	$13.98M	$16.50M
YoY Change	-20.36%	-15.42%	-0.67%
Long-Term Investments	$0.00	$100.0K	$100.0K
YoY Change	-100.0%	0.0%	-85.71%
Other Assets	$18.87M	$5.039M	$5.804M
YoY Change	225.1%	-25.69%	-45.33%
Total Long-Term Assets	$511.3M	$492.0M	$474.6M
YoY Change	7.72%	3.51%	6.87%
TOTAL ASSETS
Total Short-Term Assets	$407.3M	$382.4M	$318.3M
Total Long-Term Assets	$511.3M	$492.0M	$474.6M
Total Assets	$918.6M	$874.4M	$792.9M
YoY Change	15.84%	13.96%	7.24%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$80.70M	$81.86M	$86.18M
YoY Change	-6.36%	-6.95%	-8.69%
Accrued Expenses	$69.49M	$62.68M	$54.99M
YoY Change	26.38%	23.95%	24.76%
Deferred Revenue			$2.813M
YoY Change			701.42%
Short-Term Debt	$58.03M	$0.00	$0.00
YoY Change			-100.0%
Long-Term Debt Due	$58.03M	$43.28M	$30.11M
YoY Change	92.7%	31.9%	13.17%
Total Short-Term Liabilities	$233.2M	$211.9M	$192.1M
YoY Change	21.44%	11.05%	7.92%
LONG-TERM LIABILITIES
Long-Term Debt	$77.99M	$90.87M	$99.78M
YoY Change	-21.83%	22.46%	68.03%
Other Long-Term Liabilities	$44.12M	$36.06M	$10.72M
YoY Change	311.48%	248.17%	-22.97%
Total Long-Term Liabilities	$122.1M	$126.9M	$110.5M
YoY Change	10.51%	50.1%	50.75%
TOTAL LIABILITIES
Total Short-Term Liabilities	$233.2M	$211.9M	$192.1M
Total Long-Term Liabilities	$122.1M	$126.9M	$110.5M
Total Liabilities	$402.2M	$387.6M	$361.1M
YoY Change	11.41%	14.83%	21.93%
SHAREHOLDERS EQUITY
Retained Earnings	$176.9M	$157.4M	$118.8M
YoY Change	48.86%	32.3%	-5.3%
Common Stock	$66.00K	$65.00K	$64.00K
YoY Change	3.13%	3.17%	3.23%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$66.06M	$66.06M	$66.18M
YoY Change	-0.18%	-0.18%	-0.08%
Treasury Stock Shares	6.625M shares	6.625M shares	6.639M shares
Shareholders Equity	$373.2M	$345.3M	$293.7M
YoY Change
Total Liabilities & Shareholders Equity	$918.6M	$874.4M	$792.9M
YoY Change	15.84%	13.96%	7.24%

Cashflow Statement

Concept	2021 Q2	2021 Q1	2020 Q2
OPERATING ACTIVITIES
Net Income	$19.54M	$16.10M	-$100.0K
YoY Change	-19639.0%	-347.88%	-104.0%
Depreciation, Depletion And Amortization	$13.26M	$13.74M	$11.55M
YoY Change	14.76%	16.54%	46.57%
Cash From Operating Activities	$44.22M	$38.59M	$40.30M
YoY Change	9.74%	169.67%	387.89%
INVESTING ACTIVITIES
Capital Expenditures	-$32.16M	-$15.77M	-$13.20M
YoY Change	143.64%	-6.02%	-40.38%
Acquisitions
YoY Change
Other Investing Activities	$31.00K	$0.00	$0.00
YoY Change		-100.0%
Cash From Investing Activities	-$32.13M	-$15.77M	-$13.19M
YoY Change	143.59%	-4.37%	-40.42%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-2.671M	-11.54M	21.16M
YoY Change	-112.62%	-309.06%	-989.08%
NET CHANGE
Cash From Operating Activities	44.22M	38.59M	40.30M
Cash From Investing Activities	-32.13M	-15.77M	-13.19M
Cash From Financing Activities	-2.671M	-11.54M	21.16M
Net Change In Cash	9.424M	11.28M	48.27M
YoY Change	-80.48%	237.72%	-396.86%
FREE CASH FLOW
Cash From Operating Activities	$44.22M	$38.59M	$40.30M
Capital Expenditures	-$32.16M	-$15.77M	-$13.20M
Free Cash Flow	$76.38M	$54.36M	$53.50M
YoY Change	42.77%	74.85%	75.99%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001387467
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--06-30
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-03-31
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-34717
	dei	Entity Registrant Name EntityRegistrantName	Alpha and Omega Semiconductor Limited
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	D0
	dei	Entity Address Country EntityAddressCountry	BM
	dei	City Area Code CityAreaCode	408
	dei	Local Phone Number LocalPhoneNumber	830-9742
	dei	Entity Address Address Line1 EntityAddressAddressLine1	Clarendon House
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Address Address Line2 EntityAddressAddressLine2	2 Church Street
	dei	Entity Address City Or Town EntityAddressCityOrTown	Hamilton
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	HM 11
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	77-0553536
	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Security12b Title Security12bTitle	Common Shares
	dei	Trading Symbol TradingSymbol	AOSL
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Shell Company EntityShellCompany	false
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CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-6495000	USD
	us-gaap	Net Income Loss NetIncomeLoss	38577000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-6491000	USD
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.62
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.26
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.51
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.26
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.58
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.26
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.42
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.26
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25882000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24894000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25631000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24711000	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	27716000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	24894000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	27128000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	24711000	shares
CY2021Q1	us-gaap	Profit Loss ProfitLoss	14967000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	-9886000	USD
	us-gaap	Profit Loss ProfitLoss	36274000	USD
	us-gaap	Profit Loss ProfitLoss	-16317000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-799000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2208000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	11718000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-5304000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	14168000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-12094000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	47992000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-21621000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-1447000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	474656000	USD
CY2021Q1	aosl	Stock Issued During Period Value Stock Options Exercised And Restricted Stock Units Released StockIssuedDuringPeriodValueStockOptionsExercisedAndRestrictedStockUnitsReleased	129000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-4430000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	3292000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-12415000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	15615000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-7664000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	44700000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-9206000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	0	USD
CY2021Q1	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	5200000	USD
CY2021Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3025000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	14967000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-799000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	486778000	USD
CY2020Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	431888000	USD
	aosl	Stock Issued During Period Value Stock Options Exercised And Restricted Stock Units Released StockIssuedDuringPeriodValueStockOptionsExercisedAndRestrictedStockUnitsReleased	1624000	USD
	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	66000	USD
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	6153000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1636000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7725000	USD
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	2000000	USD
	us-gaap	Profit Loss ProfitLoss	36274000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	11718000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	486778000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	440150000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	0	USD
CY2020Q1	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	1203000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2876000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	-9886000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-2208000	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	429729000	USD
CY2019Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	443289000	USD
	aosl	Stock Issued During Period Value Stock Options Exercised And Restricted Stock Units Released StockIssuedDuringPeriodValueStockOptionsExercisedAndRestrictedStockUnitsReleased	26000	USD
	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	0	USD
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	1398000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1701000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7732000	USD
	us-gaap	Profit Loss ProfitLoss	-16317000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-5304000	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	429729000	USD
	us-gaap	Profit Loss ProfitLoss	36274000	USD
	us-gaap	Profit Loss ProfitLoss	-16317000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	39434000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	33538000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	9925000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	7732000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-732000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-85000	USD
	us-gaap	Repayments Of Debt RepaymentsOfDebt	44087000	USD
	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	600000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	20448000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-40000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	206000	USD
	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	0	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-6826000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	9582000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	14660000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2297000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-2715000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-224000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-3366000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	1097000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-1256000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	29573000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	6332000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	84524000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	22023000	USD
	aosl	Paymentsto Acquire Property Plantand Equipment Excluding Jv Company PaymentstoAcquirePropertyPlantandEquipmentExcludingJVCompany	24913000	USD
	aosl	Paymentsto Acquire Property Plantand Equipment Excluding Jv Company PaymentstoAcquirePropertyPlantandEquipmentExcludingJVCompany	33417000	USD
	aosl	Paymentsto Acquire Property Plantand Equipmentin Jv Company PaymentstoAcquirePropertyPlantandEquipmentinJVCompany	15628000	USD
	aosl	Paymentsto Acquire Property Plantand Equipmentin Jv Company PaymentstoAcquirePropertyPlantandEquipmentinJVCompany	15787000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	10000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	295000	USD
	aosl	Proceeds From Government Grant Related To Equipment ProceedsFromGovernmentGrantRelatedToEquipment	119000	USD
	aosl	Proceeds From Government Grant Related To Equipment ProceedsFromGovernmentGrantRelatedToEquipment	1254000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-40412000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-47655000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6153000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1398000	USD
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	3326000	USD
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	1727000	USD
	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	42858000	USD
	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	49146000	USD
	us-gaap	Repayments Of Debt RepaymentsOfDebt	25768000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	12267000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	7213000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-16323000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	16494000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3982000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-636000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	31771000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-9774000	USD
CY2020Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	162704000	USD
CY2019Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	124295000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	194475000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	114521000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	16912000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	15911000	USD
	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-top:9pt;text-indent:24.75pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires the Company to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses. To the extent there are material differences between these estimates and actual results, the Company's condensed consolidated financial statements will be affected. On an ongoing basis, the Company evaluates the estimates, judgments and assumptions including those related to stock rotation returns, price adjustments, allowance for doubtful accounts, inventory reserves, warranty accrual, income taxes, leases, share-based compensation, recoverability of and useful lives for property, plant and equipment and intangible assets, as well as the economic implications of the COVID-19 pandemic.</span></div>
CY2021Q1	us-gaap	Restricted Cash RestrictedCash	2400000	USD
CY2020Q2	us-gaap	Restricted Cash RestrictedCash	4200000	USD
CY2021Q1	aosl	Government Grants Reduction Recorded To Interest Expense GovernmentGrantsReductionRecordedToInterestExpense	700000	USD
	aosl	Government Grants Reduction Recorded To Interest Expense GovernmentGrantsReductionRecordedToInterestExpense	2200000	USD
CY2021Q1	aosl	Government Grants Reduction Recorded To Property Plant And Equipment GovernmentGrantsReductionRecordedToPropertyPlantAndEquipment	0	USD
	aosl	Government Grants Reduction Recorded To Property Plant And Equipment GovernmentGrantsReductionRecordedToPropertyPlantAndEquipment	100000	USD
CY2021Q1	aosl	Government Grants Reduction Recorded To Operating Expenses GovernmentGrantsReductionRecordedToOperatingExpenses	0.0	USD
	aosl	Government Grants Reduction Recorded To Operating Expenses GovernmentGrantsReductionRecordedToOperatingExpenses	3700000	USD
CY2020Q1	aosl	Government Grants Reduction Recorded To Interest Expense GovernmentGrantsReductionRecordedToInterestExpense	700000	USD
	aosl	Government Grants Reduction Recorded To Interest Expense GovernmentGrantsReductionRecordedToInterestExpense	4100000	USD
CY2020Q1	aosl	Government Grants Reduction Recorded To Property Plant And Equipment GovernmentGrantsReductionRecordedToPropertyPlantAndEquipment	0	USD
	aosl	Government Grants Reduction Recorded To Property Plant And Equipment GovernmentGrantsReductionRecordedToPropertyPlantAndEquipment	1300000	USD
CY2020Q1	aosl	Government Grants Reduction Recorded To Operating Expenses GovernmentGrantsReductionRecordedToOperatingExpenses	1800000	USD
	aosl	Government Grants Reduction Recorded To Operating Expenses GovernmentGrantsReductionRecordedToOperatingExpenses	2000000.0	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	16100000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-6495000	USD
	us-gaap	Net Income Loss NetIncomeLoss	38577000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-6491000	USD
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25882000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24894000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25631000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24711000	shares
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25882000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24894000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25631000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24711000	shares
CY2021Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1834000	shares
CY2020Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1497000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	27716000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	24894000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	27128000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	24711000	shares
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.62
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.26
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.51
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.26
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.58
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.26
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.42
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.26
CY2021Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	107000	shares
CY2020Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2665000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	169000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2825000	shares
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:9pt;text-indent:22.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company manages its credit risk associated with exposure to distributors and direct customers on outstanding accounts receivable through the application and review of credit approvals, credit ratings and other monitoring procedures. In some instances, the Company also obtains letters of credit from certain customers. </span></div><div style="margin-top:9pt;text-indent:22.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Credit sales, which are mainly on credit terms of 30 to 60 days, are only made to customers who meet the Company's credit requirements, while sales to new customers or customers with low credit ratings are usually made on an advance payment basis. The Company considers its trade accounts receivable to be of good credit quality because its key distributors and direct customers have long-standing business relationships with the Company and the Company has not experienced any significant bad debt write-offs of accounts receivable in the past. The Company closely monitors the aging of accounts receivable from its distributors and direct customers, and regularly reviews their financial positions, where available.</span></div>
CY2021Q1	us-gaap	Accounts Receivable Gross AccountsReceivableGross	52089000	USD
CY2020Q2	us-gaap	Accounts Receivable Gross AccountsReceivableGross	43394000	USD
CY2021Q1	aosl	Allowance For Price Adjustments Receivable Current AllowanceForPriceAdjustmentsReceivableCurrent	18338000	USD
CY2020Q2	aosl	Allowance For Price Adjustments Receivable Current AllowanceForPriceAdjustmentsReceivableCurrent	30092000	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	30000	USD
CY2020Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	30000	USD
CY2021Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	33721000	USD
CY2020Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	13272000	USD
CY2021Q1	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	63172000	USD
CY2020Q2	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	55377000	USD
CY2021Q1	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	62730000	USD
CY2020Q2	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	61863000	USD
CY2021Q1	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	19208000	USD
CY2020Q2	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	18288000	USD
CY2021Q1	us-gaap	Inventory Net InventoryNet	145110000	USD
CY2020Q2	us-gaap	Inventory Net InventoryNet	135528000	USD
CY2021Q1	aosl	Local Vat Receivable LocalVATReceivable	1643000	USD
CY2020Q2	aosl	Local Vat Receivable LocalVATReceivable	1639000	USD
CY2021Q1	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	2817000	USD
CY2020Q2	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	1900000	USD
CY2021Q1	us-gaap	Prepaid Insurance PrepaidInsurance	1244000	USD
CY2020Q2	us-gaap	Prepaid Insurance PrepaidInsurance	1520000	USD
CY2021Q1	aosl	Prepaid Maintenance Current PrepaidMaintenanceCurrent	1003000	USD
CY2020Q2	aosl	Prepaid Maintenance Current PrepaidMaintenanceCurrent	587000	USD
CY2021Q1	aosl	Prepaymentto Supplier PrepaymenttoSupplier	2618000	USD
CY2020Q2	aosl	Prepaymentto Supplier PrepaymenttoSupplier	938000	USD
CY2021Q1	us-gaap	Prepaid Taxes PrepaidTaxes	1790000	USD
CY2020Q2	us-gaap	Prepaid Taxes PrepaidTaxes	1991000	USD
CY2021Q1	aosl	Land Use Rights Gross LandUseRightsGross	9173000	USD
CY2020Q2	aosl	Land Use Rights Gross LandUseRightsGross	8502000	USD
CY2021Q1	aosl	Customsdeposit Customsdeposit	0	USD
CY2020Q2	aosl	Customsdeposit Customsdeposit	163000	USD
CY2021Q1	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	68000	USD
CY2020Q2	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	69000	USD
CY2021Q1	us-gaap	Other Assets Current OtherAssetsCurrent	11183000	USD
CY2020Q2	us-gaap	Other Assets Current OtherAssetsCurrent	8807000	USD
CY2021Q1	aosl	Property Plant And Equipment Excluding Equipment And Construction In Progress Gross PropertyPlantAndEquipmentExcludingEquipmentAndConstructionInProgressGross	730422000	USD
CY2020Q2	aosl	Property Plant And Equipment Excluding Equipment And Construction In Progress Gross PropertyPlantAndEquipmentExcludingEquipmentAndConstructionInProgressGross	655263000	USD
CY2021Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	335976000	USD
CY2020Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	291515000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	19455000	USD
CY2021Q1	aosl	Property Plant And Equipment Excluding Equipment And Construction In Progress Net PropertyPlantAndEquipmentExcludingEquipmentAndConstructionInProgressNet	394446000	USD
CY2020Q2	aosl	Property Plant And Equipment Excluding Equipment And Construction In Progress Net PropertyPlantAndEquipmentExcludingEquipmentAndConstructionInProgressNet	363748000	USD
CY2021Q1	us-gaap	Construction In Progress Gross ConstructionInProgressGross	38123000	USD
CY2020Q2	us-gaap	Construction In Progress Gross ConstructionInProgressGross	48592000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	432569000	USD
CY2020Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	412340000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	19455000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	5474000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	2954000	USD
CY2021Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	13981000	USD
CY2020Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	16501000	USD
CY2021Q1	us-gaap	Goodwill Goodwill	269000	USD
CY2020Q2	us-gaap	Goodwill Goodwill	269000	USD
CY2021Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	14250000	USD
CY2020Q2	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	16770000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	840000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	3360000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	3286000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	3249000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	3246000	USD
CY2021Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	13981000	USD
CY2021Q1	aosl	Prepayment For Property And Equipment PrepaymentForPropertyAndEquipment	1243000	USD
CY2020Q2	aosl	Prepayment For Property And Equipment PrepaymentForPropertyAndEquipment	2242000	USD
CY2021Q1	us-gaap	Cost Method Investments CostMethodInvestments	100000	USD
CY2020Q2	us-gaap	Cost Method Investments CostMethodInvestments	100000	USD
CY2021Q1	aosl	Customdepositnoncurrent Customdepositnoncurrent	1391000	USD
CY2020Q2	aosl	Customdepositnoncurrent Customdepositnoncurrent	1662000	USD
CY2021Q1	us-gaap	Security Deposit SecurityDeposit	912000	USD
CY2020Q2	us-gaap	Security Deposit SecurityDeposit	850000	USD
CY2021Q1	aosl	Office Lease Deposit Assets Noncurrent OfficeLeaseDepositAssetsNoncurrent	1088000	USD
CY2020Q2	aosl	Office Lease Deposit Assets Noncurrent OfficeLeaseDepositAssetsNoncurrent	766000	USD
CY2021Q1	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	305000	USD
CY2020Q2	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	184000	USD
CY2021Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	5039000	USD
CY2020Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	5804000	USD
CY2021Q1	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	25030000	USD
CY2020Q2	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	19968000	USD
CY2021Q1	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	836000	USD
CY2020Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	709000	USD
CY2021Q1	aosl	Stock Rotation Accrual Current StockRotationAccrualCurrent	4085000	USD
CY2020Q2	aosl	Stock Rotation Accrual Current StockRotationAccrualCurrent	3358000	USD
CY2021Q1	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	3476000	USD
CY2020Q2	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	5868000	USD
CY2021Q1	aosl	Accrued Inventory AccruedInventory	720000	USD
CY2020Q2	aosl	Accrued Inventory AccruedInventory	775000	USD
CY2021Q1	aosl	Accrued Facility Expenses AccruedFacilityExpenses	1744000	USD
CY2020Q2	aosl	Accrued Facility Expenses AccruedFacilityExpenses	1831000	USD
CY2021Q1	aosl	Accrued Property Plantand Equipment AccruedPropertyPlantandEquipment	12360000	USD
CY2020Q2	aosl	Accrued Property Plantand Equipment AccruedPropertyPlantandEquipment	11039000	USD
CY2021Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	5502000	USD
CY2020Q2	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	8017000	USD
CY2021Q1	aosl	Accrued Customer Deposit AccruedCustomerDeposit	6852000	USD
CY2020Q2	aosl	Accrued Customer Deposit AccruedCustomerDeposit	2813000	USD
CY2021Q1	aosl	Employee Stock Purchase Plan Payable Current EmployeeStockPurchasePlanPayableCurrent	2078000	USD
CY2020Q2	aosl	Employee Stock Purchase Plan Payable Current EmployeeStockPurchasePlanPayableCurrent	608000	USD
CY2021Q1	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	62683000	USD
CY2020Q2	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	54986000	USD
CY2020Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	709000	USD
CY2019Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	623000	USD
	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	338000	USD
	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	852000	USD
	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	211000	USD
CY2020Q2	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	8000000	USD
	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	803000	USD
CY2021Q1	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	836000	USD
CY2020Q1	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	672000	USD
CY2020Q2	aosl	Stock Rotation Accrual Current StockRotationAccrualCurrent	3358000	USD
CY2019Q2	aosl	Stock Rotation Accrual Current StockRotationAccrualCurrent	1921000	USD
	aosl	Stock Rotation Accrual Stock Issued StockRotationAccrualStockIssued	4498000	USD
	aosl	Stock Rotation Accrual Stock Issued StockRotationAccrualStockIssued	7413000	USD
	aosl	Stock Rotation Accrual Payments StockRotationAccrualPayments	3771000	USD
	aosl	Stock Rotation Accrual Payments StockRotationAccrualPayments	6027000	USD
CY2021Q1	aosl	Stock Rotation Accrual Current StockRotationAccrualCurrent	4085000	USD
CY2020Q1	aosl	Stock Rotation Accrual Current StockRotationAccrualCurrent	3307000	USD
CY2021Q1	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	33000000	USD
CY2021Q1	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	135202000	USD
CY2021Q1	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	1054000	USD
CY2021Q1	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	36056000	USD
CY2021Q1	aosl	Long Term And Short Term Debt Maturity Remainder Of Fiscal Year LongTermAndShortTermDebtMaturityRemainderOfFiscalYear	22432000	USD
CY2021Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	35032000	USD
CY2021Q1	aosl	Computer Software Liability Noncurrent ComputerSoftwareLiabilityNoncurrent	483000	USD
CY2020Q2	aosl	Computer Software Liability Noncurrent ComputerSoftwareLiabilityNoncurrent	1897000	USD
CY2021Q1	aosl	Equipment Liability Noncurrent EquipmentLiabilityNoncurrent	1354000	USD
CY2020Q2	aosl	Equipment Liability Noncurrent EquipmentLiabilityNoncurrent	0	USD
CY2021Q1	aosl	Liabilities Other Than Long Term Debt Noncurrent Other LiabilitiesOtherThanLongTermDebtNoncurrentOther	1219000	USD
CY2020Q2	aosl	Liabilities Other Than Long Term Debt Noncurrent Other LiabilitiesOtherThanLongTermDebtNoncurrentOther	826000	USD
CY2020Q2	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	10723000	USD
CY2021Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	38186000	USD
CY2021Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	24044000	USD
CY2021Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	15508000	USD
CY2021Q1	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	134148000	USD
CY2021Q1	aosl	Longterm Debt Current Maturities And Short Term Debt Gross LongtermDebtCurrentMaturitiesAndShortTermDebtGross	43738000	USD
CY2021Q1	aosl	Longterm Debt Excluding Current Maturities Gross LongtermDebtExcludingCurrentMaturitiesGross	91464000	USD
CY2021Q1	us-gaap	Deferred Finance Costs Current Gross DeferredFinanceCostsCurrentGross	458000	USD
CY2021Q1	us-gaap	Deferred Finance Costs Noncurrent Gross DeferredFinanceCostsNoncurrentGross	596000	USD
CY2021Q1	aosl	Longterm Debt Current Maturities And Shortterm Debt LongtermDebtCurrentMaturitiesAndShorttermDebt	43280000	USD
CY2021Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	90868000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	5089000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	4480000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	599000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	623000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1682000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2304000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1699000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	2142000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	164000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	224000	USD
	us-gaap	Lease Cost LeaseCost	9233000	USD
	us-gaap	Lease Cost LeaseCost	9773000	USD
CY2021Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	33036000	USD
CY2020Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	32948000	USD
CY2021Q1	aosl	Finance Lease Right Of Use Asset Gross FinanceLeaseRightOfUseAssetGross	112613000	USD
CY2020Q2	aosl	Finance Lease Right Of Use Asset Gross FinanceLeaseRightOfUseAssetGross	104374000	USD
CY2021Q1	aosl	Finance Lease Right Of Use Asset Accumulated Depreciation FinanceLeaseRightOfUseAssetAccumulatedDepreciation	94580000	USD
CY2020Q2	aosl	Finance Lease Right Of Use Asset Accumulated Depreciation FinanceLeaseRightOfUseAssetAccumulatedDepreciation	86540000	USD
CY2021Q1	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	18033000	USD
CY2020Q2	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	17834000	USD
CY2021Q1	aosl	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	21414000	USD
CY2021Q1	aosl	Finance Lease Liability To Be Paid After Year Four FinanceLeaseLiabilityToBePaidAfterYearFour	0	USD
CY2021Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y5M12D
CY2020Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y6M25D
CY2021Q1	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P1Y11M19D
CY2020Q2	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y8M19D
CY2021Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0465
CY2020Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0445
CY2021Q1	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0546
CY2020Q2	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0546
	us-gaap	Operating Lease Payments OperatingLeasePayments	4721000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	3828000	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1699000	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	2142000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	12267000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	7213000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2843000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	15699000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	4577000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	6674000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	43236000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1707000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	17724000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5547000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	12848000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4283000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	0	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3611000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	0	USD
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	6784648	shares
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	67300000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	35149000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	8276000	USD
CY2021Q1	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	2072000	USD
CY2021Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	34960000	USD
CY2021Q1	us-gaap	Finance Lease Liability FinanceLeaseLiability	33077000	USD
CY2017Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	30000000.0	USD
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	9.92
	us-gaap	Treasury Stock Shares Retired TreasuryStockSharesRetired	0	shares
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	6784648	shares
CY2021Q1	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	13400000	USD
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	150289	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	11.24
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	643978	shares
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.79
CY2020Q2	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P2Y10M20D
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	1544664	USD
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	493689	shares
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.05
	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P2Y6M14D
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	12170703	USD
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	493689	shares
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	8.05
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P2Y6M14D
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	12170703	USD
CY2021Q1	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	493689	shares
CY2021Q1	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	8.05
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P2Y6M14D
CY2021Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	12170703	USD
CY2021Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3825000	USD
CY2020Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2876000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9925000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7732000	USD
CY2021Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	30600000	USD
CY2021Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y3M18D
CY2020Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.023
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	16000000.0	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1000000.0	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1000000.0	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1000000.0	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1000000.0	USD
CY2020Q1	aosl	Discrete Income Tax Expense Benefit DiscreteIncomeTaxExpenseBenefit	1300000	USD
CY2020Q1	aosl	Income Tax Expense Benefit Prior Year Reserve Release IncomeTaxExpenseBenefitPriorYearReserveRelease	200000	USD
CY2021Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.063
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-10900000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2700000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-40000.00	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2700000	USD
	aosl	Discrete Income Tax Expense Benefit DiscreteIncomeTaxExpenseBenefit	-40000.00	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-40000.00	USD
	aosl	Discrete Income Tax Expense Benefit DiscreteIncomeTaxExpenseBenefit	-1300000	USD
	aosl	Income Tax Expense Benefit Prior Year Reserve Release IncomeTaxExpenseBenefitPriorYearReserveRelease	200000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.070
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.074
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	39000000.0	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-16400000	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	7200000	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	4300000	USD
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	Segment
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	Segment
CY2021Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	169212000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	106852000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	479593000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	342514000	USD
CY2021Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	169212000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	106852000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	479593000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	342514000	USD
CY2021Q1	aosl	Propertyplantandequipmentnetandlanduserightsnet Propertyplantandequipmentnetandlanduserightsnet	432569000	USD
CY2020Q2	aosl	Propertyplantandequipmentnetandlanduserightsnet Propertyplantandequipmentnetandlanduserightsnet	412340000	USD

Files In Submission

Name	View Source	Status
0001387467-21-000043-index-headers.html	Edgar Link	pending
0001387467-21-000043-index.html	Edgar Link	pending
0001387467-21-000043.txt	Edgar Link	pending
0001387467-21-000043-xbrl.zip	Edgar Link	pending
aosl-20210331.htm	Edgar Link	pending
aosl-20210331.xsd	Edgar Link	pending
aosl-20210331_cal.xml	Edgar Link	unprocessable
aosl-20210331_def.xml	Edgar Link	unprocessable
aosl-20210331_htm.xml	Edgar Link	completed
aosl-20210331_lab.xml	Edgar Link	unprocessable
aosl-20210331_pre.xml	Edgar Link	unprocessable
ex101aosl03312021q32021202.htm	Edgar Link	pending
ex311-aosl03312021q3202110q.htm	Edgar Link	pending
ex312-aosl03312021q3202110q.htm	Edgar Link	pending
ex321-aosl03312021q3202110q.htm	Edgar Link	pending
ex322-aosl03312021q3202110q.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$AOSL
ALPHA & OMEGA SEMICONDUCTOR Ltd Stock $aosl

2021 Q2 Form 10-Q Financial Statement

#000138746721000043 Filed on May 07, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd Stock $aosl

2021 Q2 Form 10-Q Financial Statement

#000138746721000043 Filed on May 07, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AOSL
ALPHA & OMEGA SEMICONDUCTOR Ltd Stock $aosl