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| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 200 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | THE PURPOSE OF THE OTTUMWA SYMPHONY ORCHESTRA FOUNDATION IS TO PROVIDE FOR THE PERPETUATION OF MUSICAL ARTS AND PERFORMANCES IN THE CITY OF OTTUMWA AND SURROUNDING COMMUNITIES AND FOR THE ENCOURAGEMENT OF MUSICAL EDUCATION AMONGST ELEMENTARY, HIGH SCHOOL AND COMMUNITY COLLEGE STUDENTS. |
| IRS990/AdvertisingGrp/FundraisingAmt | 0 | 712 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 712 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 425 |
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| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 865 |
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| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 3000 |
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| IRS990/CYRevenuesLessExpensesAmt | 0 | 6148 |
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| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 295 |
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| IRS990/Desc | 0 | THE PURPOSE OF THE OTTUMWA SYMPHONY ORCHESTRA FOUNDATION IS TO PROVIDE FOR THE PERPETUATION OF MUSICAL ARTS AND PERFORMANCES IN THE CITY OF OTTUMWA AND SURROUNDING COMMUNITIES AND FOR THE ENCOURAGEMENT OF MUSICAL EDUCATION AMONGST ELEMENTARY, HIGH SCHOOL AND COMMUNITY COLLEGE STUDENTS. |
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| IRS990/FederatedCampaignsAmt | 0 | 33348 |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 13 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 14 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 15 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 16 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 17 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 18 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 19 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 20 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | ANDREA BARKER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | JANE BROEK-KRAMER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | DAN DOWLING |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | DIANE DOWLING |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | PAM DEBOER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | MARY BETH HAMMER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JAKE HESTON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | STEVE MILLER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | LINDA MONTGOMERY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | ALEX MORLEY |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | ROBERT MORRISSEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | SALLY PHIPPEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | BARB SASSEEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | DAVID SHARP |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | JANET VINYARD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | MARGARET VITTETOE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | CHERILYNN WESTRICH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | DENNIS WILLHOIT |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | BOARD MEMBER |
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| IRS990/IndoorTanningServicesInd | 0 | false |
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| IRS990/MinutesOfCommitteesInd | 0 | true |
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| IRS990/MissionDesc | 0 | THE PURPOSE OF THE OTTUMWA SYMPHONY ORCHESTRA FOUNDATION IS TO PROVIDE FOR THE PERPETUATION OF MUSICAL ARTS AND PERFORMANCES IN THE CITY OF OTTUMWA AND SURROUNDING COMMUNITIES AND FOR THE ENCOURAGEMENT OF MUSICAL EDUCATION AMONGST ELEMENTARY, HIGH SCHOOL AND COMMUNITY COLLEGE STUDENTS. |
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| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 820 |
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| IRS990/OtherExpensesGrp/TotalAmt | 1 | 4000 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 852 |
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| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus3YearsAmt | 0 | 7347 |
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| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/TotalAmt | 0 | 31955 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0.10000 |
| IRS990ScheduleA/InvestmentIncomePYPct | 0 | 0.09000 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 0.90310 |
| IRS990ScheduleA/PublicSupportPY509Pct | 0 | 0.91310 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 297733 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind | 0 | X |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 55828 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 11824 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 76100 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 76315 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 77666 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 297733 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 64401 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 14154 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 83439 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt | 0 | 83662 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt | 0 | 84032 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt | 0 | 329688 |
| IRS990/ScheduleBRequiredInd | 0 | false |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 110 |
| IRS990ScheduleD/OtherLandBuildingsGrp/DepreciationAmt | 0 | 3295 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 3405 |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 110 |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/NameOfInterested/PersonNm | 0 | PATTY BABB |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/NameOfInterested/PersonNm | 1 | PATTY BABB |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/RelationshipDescriptionTxt | 0 | BOARD MEMBER |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/RelationshipDescriptionTxt | 1 | BOARD MEMBER |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/SharingOfRevenuesInd | 0 | false |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/SharingOfRevenuesInd | 1 | false |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/TransactionDesc | 0 | MANAGER |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/TransactionDesc | 1 | MUSICIAN |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | THE PURPOSE OF THE OTTUMWA SYMPHONY ORCHESTRA FOUNDATION IS TO PROVIDE FOR THE PERPETUATION OF MUSICAL ARTS AND PERFORMANCES IN THE CITY OF OTTUMWA AND SURROUNDING COMMUNITIES AND FOR THE ENCOURAGEMENT OF MUSICAL EDUCATION AMONGST ELEMENTARY, HIGH SCHOOL AND COMMUNITY COLLEGE STUDENTS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | A COPY OF THE COMPLETED FORM 990, AND RELATED SCHEDULES, IS PROVIDED TO THE BOARD OF DIRECTORS FOR REVIEW AT A MONTHLY MEETING. MEMBERS ARE PROVIDED THE OPPORTUNITY TO ASK QUESTIONS RELATED TO THE COMPLETED RETURN PRIOR TO ITS FILING. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | GOVERNING DOCUMENTS ARE AVAILABLE TO THE PUBLIC VIA WRITTEN REQUEST TO THE BOARD OF DIRECTORS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | MUSICIANS 32,033 0 0 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990 - ORGANIZATION'S MISSION |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PAGE 6, PART VI, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PAGE 6, PART VI, LINE 19 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990, PART IX, LINE 11G |
| IRS990/SchoolOperatingInd | 0 | false |
| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | false |
| IRS990/SubjectToProxyTaxInd | 0 | false |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
| IRS990/TerminateOperationsInd | 0 | false |
| IRS990/TotalAssetsBOYAmt | 0 | 241915 |
| IRS990/TotalAssetsEOYAmt | 0 | 248263 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 241915 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 248263 |
| IRS990/TotalCompGreaterThan150KInd | 0 | false |
| IRS990/TotalContributionsAmt | 0 | 33348 |
| IRS990/TotalEmployeeCnt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 6862 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 8366 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 43058 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 58286 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 200 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 200 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 241915 |