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Related-Party and Other Transactions (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
May 31, 2012
Jun. 30, 2014
Related Party Transaction [Line Items]            
Net sales to Ablecom $ 10,879us-gaap_RevenueFromRelatedParties $ 3,859us-gaap_RevenueFromRelatedParties $ 37,457us-gaap_RevenueFromRelatedParties $ 7,387us-gaap_RevenueFromRelatedParties    
Amounts owed to the Company by Ablecom 1,138us-gaap_AccountsReceivableRelatedPartiesCurrent   1,138us-gaap_AccountsReceivableRelatedPartiesCurrent     621us-gaap_AccountsReceivableRelatedPartiesCurrent
Amounts owed to Ablecom by the Company 57,154us-gaap_AccountsPayableRelatedPartiesCurrent   57,154us-gaap_AccountsPayableRelatedPartiesCurrent     48,969us-gaap_AccountsPayableRelatedPartiesCurrent
Outstanding purchase order 564,584us-gaap_PurchaseObligation   564,584us-gaap_PurchaseObligation     211,090us-gaap_PurchaseObligation
Super Micro Business Park, Inc. [Member] | Variable Interest Entity, Primary Beneficiary [Member]            
Related Party Transaction [Line Items]            
Contribution in variable interest entity         168smci_VariableInterestEntityInvestmentContribution
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= smci_SuperMicroBusinessParkInc.Member
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
 
Ownership percentage of Super Micro Business Park, Inc.         50.00%us-gaap_VariableInterestEntityOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= smci_SuperMicroBusinessParkInc.Member
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
 
Affiliated Entity [Member] | Compuware [Member] | Ablecom [Member]            
Related Party Transaction [Line Items]            
Investment ownership percentage by Ablecom 50.00%smci_InvestmentOwnershipPercentage
/ us-gaap_CounterpartyNameAxis
= smci_CompuwareMember
/ dei_LegalEntityAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
  50.00%smci_InvestmentOwnershipPercentage
/ us-gaap_CounterpartyNameAxis
= smci_CompuwareMember
/ dei_LegalEntityAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
     
Affiliated Entity [Member] | Ablecom [Member]            
Related Party Transaction [Line Items]            
Purchases from Ablecom 57,513us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
54,424us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
111,916us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
99,741us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
   
Net sales to Ablecom 10,879us-gaap_RevenueFromRelatedParties
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
3,859us-gaap_RevenueFromRelatedParties
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
37,457us-gaap_RevenueFromRelatedParties
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
7,387us-gaap_RevenueFromRelatedParties
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
   
Amounts owed to the Company by Ablecom 1,138us-gaap_AccountsReceivableRelatedPartiesCurrent
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
  1,138us-gaap_AccountsReceivableRelatedPartiesCurrent
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
    621us-gaap_AccountsReceivableRelatedPartiesCurrent
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
Amounts owed to Ablecom by the Company 57,154us-gaap_AccountsPayableRelatedPartiesCurrent
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
  57,154us-gaap_AccountsPayableRelatedPartiesCurrent
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
    48,969us-gaap_AccountsPayableRelatedPartiesCurrent
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
Tooling assets and miscellaneous costs paid to Ablecom 2,495us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
1,460us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
4,497us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
3,736us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
   
Outstanding purchase order 83,969us-gaap_PurchaseObligation
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
  83,969us-gaap_PurchaseObligation
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
    64,464us-gaap_PurchaseObligation
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
Affiliated Entity [Member] | Ablecom [Member] | Minimum [Member]            
Related Party Transaction [Line Items]            
Majority of invoiced paid to Ablecom, number of days     48 days      
Affiliated Entity [Member] | Ablecom [Member] | Maximum [Member]            
Related Party Transaction [Line Items]            
Majority of invoiced paid to Ablecom, number of days     101 days      
Investee [Member] | Super Micro [Member] | Ablecom [Member]            
Related Party Transaction [Line Items]            
Investment ownership percentage by Ablecom 0.60%smci_InvestmentOwnershipPercentage
/ us-gaap_CounterpartyNameAxis
= smci_SuperMicroComputerMember
/ dei_LegalEntityAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_InvesteeMember
  0.60%smci_InvestmentOwnershipPercentage
/ us-gaap_CounterpartyNameAxis
= smci_SuperMicroComputerMember
/ dei_LegalEntityAxis
= smci_AblecomTechnologyMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_InvesteeMember
     
Investee [Member] | Ablecom [Member] | Charles Liang and His Wife [Member]            
Related Party Transaction [Line Items]            
Investment ownership percentage by Ablecom 10.50%smci_InvestmentOwnershipPercentage
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ dei_LegalEntityAxis
= smci_CharlesLiangAndWifeMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_InvesteeMember
  10.50%smci_InvestmentOwnershipPercentage
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ dei_LegalEntityAxis
= smci_CharlesLiangAndWifeMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_InvesteeMember
     
Management and Immediate Family Member of Management [Member] | Ablecom [Member] | Steve Liang and Other Family Members [Member]            
Related Party Transaction [Line Items]            
Investment ownership percentage by Ablecom 42.90%smci_InvestmentOwnershipPercentage
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ dei_LegalEntityAxis
= smci_SteveLiangandOtherFamilyMembersMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= smci_ManagementAndImmediateFamilyMemberofManagementMember
  42.90%smci_InvestmentOwnershipPercentage
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ dei_LegalEntityAxis
= smci_SteveLiangandOtherFamilyMembersMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= smci_ManagementAndImmediateFamilyMemberofManagementMember
     
Co-venturer [Member] | Ablecom [Member] | Selling, General and Administrative Expenses [Member]            
Related Party Transaction [Line Items]            
Net income (loss) attributable to Ablecom's interest $ (10)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_CoVenturerMember
$ (7)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_CoVenturerMember
$ (7)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_CoVenturerMember
$ (13)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ us-gaap_CounterpartyNameAxis
= smci_AblecomTechnologyMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_CoVenturerMember