| IRS990EZ/ActivitiesNotPreviouslyRptInd | 0 | false |
| IRS990EZ/BenefitsPaidToOrForMembersAmt | 0 | 56818 |
| IRS990EZ/BooksInCareOfDetail/PersonNm | 0 | SUSAN KITSU |
| IRS990EZ/BooksInCareOfDetail/PhoneNum | 0 | 8087224674 |
| IRS990EZ/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 730 ILIAINA STREET |
| IRS990EZ/BooksInCareOfDetail/USAddress/CityNm | 0 | KAILUA |
| IRS990EZ/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | HI |
| IRS990EZ/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 96734 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/BOYAmt | 0 | 27623 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/EOYAmt | 0 | 37629 |
| IRS990EZ/ChgMadeToOrgnzngDocNotRptInd | 0 | false |
| IRS990EZ/ContributionsGiftsGrantsEtcAmt | 0 | 22798 |
| IRS990EZ/CostOfGoodsSoldAmt | 0 | 2520 |
| IRS990EZ/DonorAdvisedFndsInd | 0 | false |
| IRS990EZ/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990EZ/ExcessOrDeficitForYearAmt | 0 | 10006 |
| IRS990EZ/FeesAndOtherPymtToIndCntrctAmt | 0 | 298 |
| IRS990EZ/FiledScheduleAInd | 0 | true |
| IRS990EZ/ForeignOfficeInd | 0 | false |
| IRS990EZ/Form1120PolFiledInd | 0 | false |
| IRS990EZ/Form990TotalAssetsGrp/BOYAmt | 0 | 27623 |
| IRS990EZ/Form990TotalAssetsGrp/EOYAmt | 0 | 37629 |
| IRS990EZ/FundraisingGrossIncomeAmt | 0 | 13230 |
| IRS990EZ/GrossProfitLossSlsOfInvntryAmt | 0 | 16953 |
| IRS990EZ/GrossReceiptsAmt | 0 | 92489 |
| IRS990EZ/GrossSalesOfInventoryAmt | 0 | 19473 |
| IRS990EZ/InfoInScheduleOPartIInd | 0 | X |
| IRS990EZ/LandAndBuildingsGrp/BOYAmt | 0 | 0 |
| IRS990EZ/LandAndBuildingsGrp/EOYAmt | 0 | 0 |
| IRS990EZ/LobbyingActivitiesInd | 0 | false |
| IRS990EZ/MadeLoansToFromOfficersInd | 0 | false |
| IRS990EZ/MethodOfAccountingCashInd | 0 | X |
| IRS990EZ/NetAssetsOrFundBalancesBOYAmt | 0 | 27623 |
| IRS990EZ/NetAssetsOrFundBalancesEOYAmt | 0 | 37629 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/BOYAmt | 0 | 27623 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/EOYAmt | 0 | 37629 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 0 | 3.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 1 | 2.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 2 | 2.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 2 | 0 |
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| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 0 | WADE NAKASHIMA |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 1 | MARY ANN ANDRADE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 2 | SUSAN KITSU |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 0 | PRESIDENT |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 1 | SECRETARY |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 2 | TREASURER |
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| IRS990EZ/Organization501c3Ind | 0 | X |
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| IRS990EZ/OrganizationHadUBIInd | 0 | false |
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| IRS990EZ/OtherAssetsTotalDetail/EOYAmt | 0 | 0 |
| IRS990EZ/OtherExpensesTotalAmt | 0 | 16713 |
| IRS990EZ/PartVIHghstPdCntrctProfSrvcTxt | 0 | NONE |
| IRS990EZ/PartVIOfCompOfHghstPdEmplTxt | 0 | NONE |
| IRS990EZ/PoliticalCampaignActyInd | 0 | false |
| IRS990EZ/PrimaryExemptPurposeTxt | 0 | SEE SCHEDULE O |
| IRS990EZ/ProgramServiceRevenueAmt | 0 | 36988 |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt | 0 | ASSISTING IN ATHLETIC EVENTS AND BUILDING RELATIONSHIP WITHIN THE SCHOOL |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt | 0 | 69951 |
| IRS990EZ/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990EZ/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990EZ/ScheduleBNotRequiredInd | 0 | X |
| IRS990EZ/SchoolOperatingInd | 0 | false |
| IRS990EZ/SpecialEventsDirectExpensesAmt | 0 | 6134 |
| IRS990EZ/SpecialEventsNetIncomeLossAmt | 0 | 7096 |
| IRS990EZ/SubjectToProxyTaxInd | 0 | false |
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| IRS990EZ/SumOfTotalLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990EZ/TanningServicesProvidedInd | 0 | false |
| IRS990EZ/TotalExpensesAmt | 0 | 73829 |
| IRS990EZ/TotalProgramServiceExpensesAmt | 0 | 69951 |
| IRS990EZ/TotalRevenueAmt | 0 | 83835 |
| IRS990EZ/TransactionWithControlEntInd | 0 | false |
| IRS990EZ/TypeOfOrganizationCorpInd | 0 | X |
| IRS990ScheduleA/First5Years509Ind | 0 | X |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt | 0 | 22798 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt | 0 | 49672 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt | 0 | 72470 |
| IRS990ScheduleA/NetIncomeFromOtherUBIGrp/CurrentTaxYearAmt | 0 | 32703 |
| IRS990ScheduleA/NetIncomeFromOtherUBIGrp/TotalAmt | 0 | 32703 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 72470 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 22798 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 49672 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 72470 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 55501 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 49672 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt | 0 | 105173 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | PRIMARY EXEMPT PURPOSE IS TO ASSIST THE MISSION OF THE SCHOOL BY BUILDING MIND, BODY AND SPIRIT OF THE STUDENTS AND ENCOURAGE THE TALENT, ABILITIES AND SCHOLARSHIP IN STUDENTS THRU ITS PROGRAMS, ATHLETICS IN PARTICULAR THRU FINANCIAL AND OTHER SUPPORT. ALSO FORSTERING GOOD SPORTSMANSHIP AND FELLOWSHIP |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | Description AmountFEE 250GENERAL EXCISSE TAX 1,718HONORARIUM 1,200INSURANCE 1,295OFFICE EXPENSES 317PETTY CASH 500REFEREES 2,900SCHOLARSHIPS 7,600SECURITY 243TRAVEL 690 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | General explanation attachment |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Description of other expenses Part I line 16 |
| ReturnHeader/BuildTS | 0 | 2019-02-21 02:37:17Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | true |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | SUSAN KITSU |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | TREASURER |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 8087224674 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2018-11-13 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | MUSTANG ATHLETIC FOUNDATION |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | MUST |
| ReturnHeader/Filer/EIN | 0 | 810938026 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | 730 ILIANINA STREET |
| ReturnHeader/Filer/USAddress/CityNm | 0 | KAILUA |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | HI |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 96734 |
| ReturnHeader/FilingSecurityInformation/AtSubmissionCreationDeviceId | 0 | A772810196D6E0677E84E5AF08395A481B5354E7 |
| ReturnHeader/FilingSecurityInformation/AtSubmissionFilingDeviceId | 0 | A772810196D6E0677E84E5AF08395A481B5354E7 |
| ReturnHeader/FilingSecurityInformation/FederalOriginalSubmissionId | 0 | 99218820191032oplv1k |
| ReturnHeader/FilingSecurityInformation/FederalOriginalSubmissionIdDt | 0 | 2019-04-13 |
| ReturnHeader/FilingSecurityInformation/FilingLicenseTypeCd | 0 | P |
| ReturnHeader/FilingSecurityInformation/IPAddress/IPv4AddressTxt | 0 | 98.151.87.137 |
| ReturnHeader/FilingSecurityInformation/IPDt | 0 | 2019-04-13 |
| ReturnHeader/FilingSecurityInformation/IPTm | 0 | 17:55:24 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 822019625 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | BSnT LLC |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | P O Box 235582 |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | Honolulu |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | HI |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 96823 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 8082219388 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2019-04-13 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | May Hiraoka-Tomita |
| ReturnHeader/ReturnTs | 0 | 2019-04-13T17:53:31-04:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990EZ |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2017-07-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2018-06-30 |
| ReturnHeader/TaxYr | 0 | 2017 |