| IRS990EZ/ActivitiesNotPreviouslyRptInd | 0 | false |
| IRS990EZ/BooksInCareOfDetail/PersonNm | 0 | ROBERT HAYNES |
| IRS990EZ/BooksInCareOfDetail/PhoneNum | 0 | 2242251202 |
| IRS990EZ/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | PO BOX 218 |
| IRS990EZ/BooksInCareOfDetail/USAddress/CityNm | 0 | FOX LAKE |
| IRS990EZ/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | IL |
| IRS990EZ/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 60020 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/BOYAmt | 0 | 207482 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/EOYAmt | 0 | 195563 |
| IRS990EZ/ChgMadeToOrgnzngDocNotRptInd | 0 | false |
| IRS990EZ/ContributionsGiftsGrantsEtcAmt | 0 | 507 |
| IRS990EZ/CostOfGoodsSoldAmt | 0 | 1653 |
| IRS990EZ/DonorAdvisedFndsInd | 0 | false |
| IRS990EZ/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990EZ/ExcessOrDeficitForYearAmt | 0 | -12013 |
| IRS990EZ/FeesAndOtherPymtToIndCntrctAmt | 0 | 1068 |
| IRS990EZ/FiledScheduleAInd | 0 | false |
| IRS990EZ/ForeignFinancialAccountInd | 0 | false |
| IRS990EZ/ForeignOfficeInd | 0 | false |
| IRS990EZ/Form1120PolFiledInd | 0 | false |
| IRS990EZ/Form990TotalAssetsGrp/BOYAmt | 0 | 209982 |
| IRS990EZ/Form990TotalAssetsGrp/EOYAmt | 0 | 198063 |
| IRS990EZ/GrossProfitLossSlsOfInvntryAmt | 0 | 41 |
| IRS990EZ/GrossReceiptsAmt | 0 | 5632 |
| IRS990EZ/GrossSalesOfInventoryAmt | 0 | 1694 |
| IRS990EZ/InfoInScheduleOPartIIInd | 0 | X |
| IRS990EZ/InfoInScheduleOPartIInd | 0 | X |
| IRS990EZ/InitialReturnInd | 0 | X |
| IRS990EZ/LandAndBuildingsGrp/BOYAmt | 0 | 0 |
| IRS990EZ/LandAndBuildingsGrp/EOYAmt | 0 | 0 |
| IRS990EZ/MadeLoansToFromOfficersInd | 0 | false |
| IRS990EZ/MembershipDuesAmt | 0 | 2300 |
| IRS990EZ/MethodOfAccountingCashInd | 0 | X |
| IRS990EZ/NetAssetsOrFundBalancesBOYAmt | 0 | 209982 |
| IRS990EZ/NetAssetsOrFundBalancesEOYAmt | 0 | 198063 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/BOYAmt | 0 | 209982 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/EOYAmt | 0 | 198063 |
| IRS990EZ/OccupancyRentUtltsAndMaintAmt | 0 | 1157 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 0 | 15.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 1 | 20.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 2 | 15.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 3 | 45.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 4 | 20.00 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 3 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 3 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 3 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 0 | MIKE ALEXANDER |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 1 | SCOTT COE |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 2 | SUSAN DANIELSEN |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 3 | ROBERT HAYNES |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 4 | AVES THOMPSON |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 0 | PRESIDENT |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 1 | 1ST VICE PRESIDENT |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 2 | 2ND VICE PRESIDENT |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 3 | SECRETARYTREASURER |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 4 | DIRECTOR |
| IRS990EZ/OperateHospitalInd | 0 | false |
| IRS990EZ/Organization501cInd | 0 | X |
| IRS990EZ/OrganizationDissolvedEtcInd | 0 | false |
| IRS990EZ/OrganizationHadUBIInd | 0 | false |
| IRS990EZ/OtherAssetsTotalDetail/BOYAmt | 0 | 2500 |
| IRS990EZ/OtherAssetsTotalDetail/EOYAmt | 0 | 2500 |
| IRS990EZ/OtherChangesInNetAssetsAmt | 0 | 94 |
| IRS990EZ/OtherExpensesTotalAmt | 0 | 8907 |
| IRS990EZ/PoliticalCampaignActyInd | 0 | false |
| IRS990EZ/PrimaryExemptPurposeTxt | 0 | SEE SCHEDULE O |
| IRS990EZ/ProgramServiceRevenueAmt | 0 | 1131 |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt | 0 | TO PROMOTE AND MAINTAIN FRIENDSHIPS AND CAMARADERIE AND TO SUPPORT THE ACTIVE SECOND INFANTRY DIVISION |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt | 0 | 2299 |
| IRS990EZ/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990EZ/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990EZ/SalariesOtherCompEmplBnftAmt | 0 | 4860 |
| IRS990EZ/SubjectToProxyTaxInd | 0 | false |
| IRS990EZ/SumOfTotalLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990EZ/SumOfTotalLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990EZ/TanningServicesProvidedInd | 0 | false |
| IRS990EZ/TotalExpensesAmt | 0 | 15992 |
| IRS990EZ/TotalProgramServiceExpensesAmt | 0 | 2299 |
| IRS990EZ/TotalRevenueAmt | 0 | 3979 |
| IRS990EZ/TransactionWithControlEntInd | 0 | false |
| IRS990EZ/TypeOfOrganizationCorpInd | 0 | X |
| IRS990EZ/WebsiteAddressTxt | 0 | WWW.2IDA.ORG |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | FORM 990-EZ, PART III - ORGANIZATIONS PRIMARY EXEMPT PURPOSETHE SECOND INDIANHEAD DIVISION ASSOCIATION PROMOTES AND MAINTAINS FRIENDSHIPS AND CAMARADERIE, SUPPORTS THE ACTIVE SECOND INFANTRY DIVISION, PROVIDES SERVICES FOR AND PROTECTS THE INTERESTS OF ITS MEMBERS AND THEIR DEPENDENTS |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | DESCRIPTION AMOUNTAUTOMOBILE 1,500TELEPHONE & INTERNET 542OFFICE EXPENSE 2,797INSURANCE 1,769REUNION EXPENSES 2,299 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | DESCRIPTION AMOUNTUNREALIZED GAINS ON INVESTMEST 94 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | CATEGORY BEGINNING OF YEAR END OF YEARINVENTORIES 2,500 2,500 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | General explanation attachment |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Description of other expenses Part I line 16 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Other changes in net assets or fund balances Part I line 20 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | Description of other assets Part II line 24 |
| ReturnHeader/AdditionalFilerInformation/TrustedCustomerGrp/AuthenticationAssuranceLevelCd | 0 | AAL1 |
| ReturnHeader/AdditionalFilerInformation/TrustedCustomerGrp/IdentityAssuranceLevelCd | 0 | IAL1 |
| ReturnHeader/AdditionalFilerInformation/TrustedCustomerGrp/OOBSecurityVerificationCd | 0 | 00 |
| ReturnHeader/AdditionalFilerInformation/TrustedCustomerGrp/TrustedCustomerCd | 0 | 0 |
| ReturnHeader/BuildTS | 0 | 2022-09-23 18:48:47Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | true |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | ROBERT HAYNES |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | TREASURER |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 2242251202 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2021-01-22 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | SECOND INDIANHEAD DIVISION ASSN INC |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | SECO |
| ReturnHeader/Filer/EIN | 0 | 746040639 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | PO BOX 218 |
| ReturnHeader/Filer/USAddress/CityNm | 0 | FOX LAKE |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | IL |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 60020 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 364416989 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | A&A Accounting Associates LTD |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 2419 W Johnsburg Rd |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | Johnsburg |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | IL |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 60051 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 8153449482 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2021-02-12 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | Cynthia A Harris |
| ReturnHeader/ReturnTs | 0 | 2021-02-12T14:06:16-05:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990EZ |
| ReturnHeader/SigningOfficerGrp/PersonFullName/PersonFirstNm | 0 | ROBERT |
| ReturnHeader/SigningOfficerGrp/PersonFullName/PersonLastNm | 0 | HAYNES |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2020-07-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2020-09-30 |
| ReturnHeader/TaxYr | 0 | 2020 |