Debt Instrument, Basis Spread on Variable Rate, Multiple

No definition available.

Name:	aosl_DebtInstrumentBasisSpreadonVariableRateMultiple
Namespace Prefix:	aosl_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

Name:	us-gaap_ProceedsFromLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

+ References

+ Details

Name:	us-gaap_ProceedsFromShortTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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

- Definition

The portion of the carrying amount of short-term borrowings outstanding as of the balance sheet date which accrues interest at a set, unchanging rate.

+ References

No definition available.

+ Details

Name:	us-gaap_ShortTermDebtPercentageBearingFixedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Bank borrowings - Short-term borrowing (Details)	1 Months Ended			3 Months Ended
Bank borrowings - Short-term borrowing (Details)	Feb. 29, 2020 USD ($)	Jan. 31, 2020 USD ($)	Oct. 31, 2019 USD ($)	Jun. 30, 2020 USD ($) Rate	Jun. 30, 2020 CNY (¥)	Apr. 15, 2020 USD ($)	Apr. 15, 2020 CNY (¥)	Oct. 31, 2019 CNY (¥)	Sep. 23, 2019 USD ($)	Sep. 23, 2019 CNY (¥)	Mar. 31, 2019 USD ($)	Mar. 21, 2019 CNY (¥) Rate	Dec. 31, 2018 USD ($)	Dec. 04, 2018 CNY (¥)	Nov. 29, 2018 CNY (¥)	Nov. 16, 2018 USD ($)	Nov. 16, 2018 CNY (¥)
Loan Agreement November 29, 2018
Short-term Debt [Line Items]
Debt instrument, face amount \| ¥															¥ 80,000,000
Loan Agreement December 04, 2018
Short-term Debt [Line Items]
Debt instrument, face amount													$ 14,500,000	¥ 20,000,000
Short-term debt				$ 0
Loans Payable \| Loan Agreement, April 15, 2020
Short-term Debt [Line Items]
Debt instrument, face amount						$ 14,300,000	¥ 100,000,000
Short-term debt				11,800,000
Loans Payable \| Loan Agreement, April 15, 2020, Working Capital Borrowing in Chinese Yuan
Short-term Debt [Line Items]
Debt instrument, face amount \| ¥							20,000,000
Loans Payable \| Loan Agreement, April 15, 2020, Collateralized Borrowings in US Dollars
Short-term Debt [Line Items]
Debt instrument, face amount \| ¥							¥ 80,000,000
Loans Payable \| Loan Agreement, April 15, 2020, Tranche One
Short-term Debt [Line Items]
Proceeds from short-term debt				$ 2,800,000	¥ 20,000,000
Interest rate \| Rate				5.1375%
Loans Payable \| Loan Agreement, April 15, 2020, Tranche Two
Short-term Debt [Line Items]
Proceeds from short-term debt				$ 7,100,000
Interest rate \| Rate				2.70%
Loans Payable \| Loan Agreement, April 15, 2020, Tranche Three
Short-term Debt [Line Items]
Proceeds from short-term debt				$ 1,900,000
Interest rate \| Rate				2.80%
Loans Payable \| Loan Agreement March, 21, 2019
Short-term Debt [Line Items]
Debt instrument, face amount											$ 3,000,000.0	¥ 20,000,000
Interest rate \| Rate												5.44%
Short-term debt				$ 0
Foreign Line of Credit \| Loan Agreement September 23, 2019
Short-term Debt [Line Items]
Short-term debt				0
Maximum borrowing capacity									$ 7,100,000	¥ 50,000,000.0
Proceeds from lines of credit	$ 5,500,000	$ 1,600,000
Bank Of Communications Limited [Member]
Short-term Debt [Line Items]
Short-term debt				0
Maximum borrowing capacity			$ 8,500,000					¥ 60,000,000.0
Industrial And Commercial Bank of China \| Foreign Line of Credit
Short-term Debt [Line Items]
Short-term debt				$ 0												$ 10,300,000	¥ 72,000,000.0
Base Rate \| China \| Bank Of Communications Limited [Member]
Short-term Debt [Line Items]
Basis spread multiple			1.05					1.05
Basis spread on variable rate			4.99%