Debt Instrument, Collateral, Number of Buildings

No definition available.

Name:	smci_DebtInstrumentCollateralNumberofBuildings
Namespace Prefix:	smci_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Credit Terms for Line of Credit and Term Loans

+ References

No definition available.

+ Details

Name:	smci_DebtInstrumentCreditTermsForLineOfCreditAndTermLoans
Namespace Prefix:	smci_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Credit Terms for Line of Credit and Term Loans, Ratio

+ References

No definition available.

+ Details

Name:	smci_DebtInstrumentCreditTermsForLineOfCreditAndTermLoansRatio
Namespace Prefix:	smci_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Credit Terms for Line of Credit and Term Loans, Market Value

+ References

No definition available.

+ Details

Name:	smci_DebtInstrumentCreditTermsforLineofCreditandTermLoansMarketValue
Namespace Prefix:	smci_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percent Of Eligible Accounts Receivable

+ References

No definition available.

+ Details

Name:	smci_PercentOfEligibleAccountsReceivable
Namespace Prefix:	smci_
Data Type:	num:percentItemType
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

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentCollateralAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

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

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

+ Details

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

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=smci_BankOfAmericaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=smci_CTBCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=smci_CTBC2013FacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=smci_CTBCsEstablishedUSDInterestRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=smci_TermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_UnsecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=smci_CTBCsEstablishedNTDInterestRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=smci_BankOfAmericaCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Short-Term and Long-Term Obligations - Long-Term Obligations (Details)	1 Months Ended			12 Months Ended
	Jun. 30, 2015 USD ($) Building	Nov. 30, 2013 USD ($)	Jul. 29, 2012	Jun. 30, 2015 USD ($) Consecutive_Quarters Building	Jun. 30, 2014 USD ($)	Nov. 30, 2013 TWD	Jul. 31, 2012 USD ($)	Jul. 31, 2012 TWD	Oct. 30, 2011 USD ($)	Oct. 30, 2011 TWD
Bank of America [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate, period end	0.79%			0.79%	1.19%
Bank of America [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate, period end	1.68%			1.68%	1.65%
CTBC [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity									$ 9,898,000	TWD 300,000,000
CTBC 2013 Facility [Member] \| CTBC [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 33,981,000				TWD 1,000,000,000
Line of Credit [Member] \| CTBC 2013 Facility [Member] \| CTBC [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 16,991,000				TWD 500,000,000
Credit facility, term		13 months
Percent of eligible accounts receivable		80.00%				80.00%
Debt, total outstanding balance					$ 0
Line of Credit [Member] \| CTBC 2013 Facility [Member] \| CTBC [Member] \| CTBC's Established USD Interest Rate [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, basis spread on variable rate		0.30%
Term Loan [Member] \| Bank of America [Member]
Debt Instrument [Line Items]
Term loan, face amount	$ 14,000,000			$ 14,000,000
Number of buildings as collateral \| Building	3			3
Amount of assets as collateral for credit facility	$ 17,354,000			$ 17,354,000	17,584,000
Credit facility, term	5 years
Debt, total outstanding balance	$ 3,733,000			$ 3,733,000	$ 6,533,000
Term Loan [Member] \| Bank of America [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Credit facility, basis spread on variable rate	1.50%
Term Loan [Member] \| CTBC [Member]
Debt Instrument [Line Items]
Term loan, face amount							$ 14,912,000	TWD 450,000,000
Credit facility, basis spread on variable rate			0.30%
Term Loan [Member] \| CTBC 2013 Facility [Member] \| CTBC [Member]
Debt Instrument [Line Items]
Interest rate, period end					1.15%
Amount of assets as collateral for credit facility					$ 27,345,000
Debt, total outstanding balance					$ 22,055,000
Term Loan [Member] \| CTBC 2013 Facility [Member] \| CTBC [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 23,787,000				TWD 700,000,000
Credit facility, term		13 months
Term Loan [Member] \| CTBC 2013 Facility [Member] \| CTBC [Member] \| Unsecured Debt [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 3,398,000				TWD 100,000,000
Credit facility, term		13 months
Term Loan [Member] \| CTBC 2013 Facility [Member] \| CTBC [Member] \| CTBC's Established NTD Interest Rate [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Credit facility, basis spread on variable rate		0.25%
Bank of America Credit Agreement [Member] \| Bank of America [Member]
Debt Instrument [Line Items]
Not to incur on a consolidated basis, a net loss before taxes and extraordinary items in any two consecutive quarterly accounting periods \| Consecutive_Quarters				2
Bank of America Credit Agreement [Member] \| Bank of America [Member] \| Minimum [Member]
Debt Instrument [Line Items]
The Company's funded debt to EBITDA ratio (ratio of all outstanding liabilities for borrowed money and other interest-bearing liabilities, including current and long-term debt, less the non-current portion of subordinated liabilities to EBITDA), shall not be greater than				2.00
The Company's unencumbered liquid assets, as defined in the agreement, held in the United States shall have an aggregate market value, of not less than				$ 30,000,000
Unsecured Debt [Member] \| CTBC 2013 Facility [Member] \| CTBC [Member] \| CTBC's Established NTD Interest Rate [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, basis spread on variable rate		0.25%