| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | SUPPORT OF THE PUBLIC LIBRARY. |
| IRS990/AllOtherContributionsAmt | 0 | 6425 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | F B TOSSBERG |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 4063634366 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1 | 0 | 278 GRANTSDALE RD |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine2 | 0 | 278 GRANTSDALE RD |
| IRS990/BooksInCareOfDetail/USAddress/City | 0 | HAMILTON |
| IRS990/BooksInCareOfDetail/USAddress/State | 0 | MT |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCode | 0 | 59840 |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 10574 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 16109 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConflictOfInterestPolicyInd | 0 | false |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 6425 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 28202 |
| IRS990/CYOtherExpensesAmt | 0 | 10903 |
| IRS990/CYOtherRevenueAmt | 0 | 1188 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 95 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 25007 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 10903 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 35910 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/Desc | 0 | CONTRIBUTIONS ARE SOLICITED TO SUSSTAIN A FUND FOR THE SUPPORT AND FUTURE EXPANSION OF THE PUBLIC LIBRARY. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 10903 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 750 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 750 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | JONI LODMELL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | FREDRICK TOSSBERG |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | SHARI GIVENS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | DIANE KING |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | PATRICIA CANARIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | MARILEE SHOCKLEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | CAROL OLSON |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CHAIRMAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | DIRECTOR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/FundraisingGrossIncomeAmt | 0 | 1188 |
| IRS990/GainOrLossGrp/OtherAmt | 0 | 2909 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 13796 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 7 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossAmountSalesAssetsGrp/OtherAmt | 0 | 2909 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 88561 |
| IRS990/GrossReceiptsAmt | 0 | 110675 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 7 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InvestmentIncomeGrp/RelatedOrExemptFuncIncomeAmt | 0 | 11497 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 11497 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 504623 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 565447 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LegalDomicileStateCd | 0 | MT |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 74765 |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | SUPPORT OF THE PUBLIC LIBRARY. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 515196 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 581555 |
| IRS990/NetGainOrLossInvestmentsGrp/RelatedOrExemptFuncIncomeAmt | 0 | 16705 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 16705 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 1188 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 405 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 405 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 41352 |
| IRS990/OtherExpensesGrp/Desc | 0 | TRUSTEE FEES |
| IRS990/OtherExpensesGrp/Desc | 1 | FOREIGN TAXES |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 4922 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 17 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 4922 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 17 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 1 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 1 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PaymentsToAffiliatesGrp/ProgramServicesAmt | 0 | 4809 |
| IRS990/PaymentsToAffiliatesGrp/TotalAmt | 0 | 4809 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrincipalOfficerNm | 0 | F B TOSSBERG |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | POSTER & CARD SALES |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 95 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 95 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 3125 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 3955 |
| IRS990/PYInvestmentIncomeAmt | 0 | 30013 |
| IRS990/PYOtherExpensesAmt | 0 | 9068 |
| IRS990/PYOtherRevenueAmt | 0 | 1088 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 92 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 21295 |
| IRS990/PYTotalExpensesAmt | 0 | 13023 |
| IRS990/PYTotalRevenueAmt | 0 | 34318 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 25007 |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | false |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990ScheduleA/CertificationInd | 0 | X |
| IRS990ScheduleA/Contribution35ControlledInd | 0 | false |
| IRS990ScheduleA/ContributionControllerInd | 0 | false |
| IRS990ScheduleA/ContributionFamilyInd | 0 | false |
| IRS990ScheduleA/Form990ScheduleAPartIVGrp/ExplanationTxt | 0 | THE IRS ORIGINAL DETERMINATION STATES THE ORGANIZATION QUALIFIES UNDER CODE SECTION 170(B)(1)(A)(VI) AND SECTIONS 509(A)(1) OR 509(A)(2). ALL PRIOR FORM 990 SCHEDULE A'S HAVE LISTED THE ORGANIZATION AS TYPE 7, NORMALLY RECEIVING MORE THAN 1/3 SUPPORT FROM THE PUBLIC. HOWEVER, AS THE ORGANIZATION HAS EVOLVED, TYPE 11 IS A MORE ACCURATE DEFINITION. THE ORGANIZATION IS DESCRIBED IN SECTION 509(A)(3), AS SUPPORTING ORGANIZATION. AS A SUPPORTING ORGANIZATION, THE ORGANIZATION QUALIFIES UNDER SECTION 509(A)(1) AS A PUBLICLY SUPPORTED ORGANIZATION BASED ON MEETING THE MINIMUM OF 10% PUBLIC SUPPORT, AND THE APPLICATION OF THE FACTS AND CIRCUMSTANCES TESTS. IN PARTICULAR, TEST NUMBER 1-ALL OF THE INVESTED INCOME WAS GENERATED FROM PUBLIC CONTRIBUTIONS DURING THE INITIAL YEARS OF THE ORGANIZATION, AND TEST NUMBER 2-CURRENT SUPPORT IS FROM A NUMBER OF INDIVIDUAL CONTRIBUTORS, NOT A SINGLE FAMILY OR OTHER SMALL GROUP. THEREFORE, THE INDICATION OF THE TYPE OF ORGANIZATION IS BEING UPDATED ON THIS RETURN FROM A CODE 7 TO A CODE 11. |
| IRS990ScheduleA/Form990ScheduleAPartIVGrp/FormAndLineReferenceDesc | 0 | SUPPLEMENTAL INFORMATION |
| IRS990ScheduleA/SupportedOrganizationsTotalCnt | 0 | 1 |
| IRS990ScheduleA/SupportedOrgInformationGrp/EIN | 0 | 816001270 |
| IRS990ScheduleA/SupportedOrgInformationGrp/GoverningDocumentListedInd | 0 | true |
| IRS990ScheduleA/SupportedOrgInformationGrp/OrganizationTypeDesc | 0 | 7 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportAmt | 0 | 4809 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportedOrganizationName/BusinessNameLine1 | 0 | BITTERROOT PUBLIC LIBRARY |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportedOrganizationName/BusinessNameLine2 | 0 | BITTERROOT PUBLIC LIBRARY |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportedOrgNotifiedInd | 0 | true |
| IRS990ScheduleA/SupportedOrgInformationGrp/USOrganizedInd | 0 | true |
| IRS990ScheduleA/SupportingOrganization509a3Ind | 0 | X |
| IRS990ScheduleA/SupportingOrgType3NonFuncInd | 0 | X |
| IRS990ScheduleA/SupportSumAmt | 0 | 4809 |
| IRS990/ScheduleBRequiredInd | 0 | false |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 1 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | MT ARTS COUNCIL |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 1 |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | THE BOARD OF DIRECTORS REVIEWS THE 990 AFTER IT IS RECIEVED FROM THE CPA FIRM. IF THERE ARE QUESTIONS OR CONCERNS, THE BOARD REQUESTS THE CPA FIRM TO EITHER CONFIRM OR ADJUST THE INFORMATION PRESENTED TO PROVIDE A COMPLETE AND ACCURATE FILING. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | IF A CONFLICT OF INTEREST ARISES, THE PARTY INVOLVED EITHER EXCUSES HIM OR HERSELF OR THE BOARD REQUESTS THE PARTY TO ABSTAIN FROM VOTING ON THE ISSUE AT HAND. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | DOCUMENTS ARE MADE AVAILABLE TO THE PUBLIC AT THE LIBRARY DURING NORMAL BUSINESS HOURS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | UNREALIZED GAINS 41,352 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990, PAGE 6, PART VI, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PAGE 6, PART VI, LINE 12C |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PAGE 6, PART VI, LINE 19 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990, PART XI, LINE 9 |
| IRS990/SchoolOperatingInd | 0 | false |
| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/SubjectToProxyTaxInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
| IRS990/TempOrPermanentEndowmentsInd | 0 | false |
| IRS990/TerminateOperationsInd | 0 | false |
| IRS990/TotalAssetsBOYAmt | 0 | 515197 |
| IRS990/TotalAssetsEOYAmt | 0 | 581556 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 515197 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 581556 |
| IRS990/TotalCompGreaterThan150KInd | 0 | false |
| IRS990/TotalContributionsAmt | 0 | 6425 |
| IRS990/TotalEmployeeCnt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 10903 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 10903 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesBOYAmt | 0 | 1 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 1 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 1 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 1 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 515196 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 581555 |
| IRS990/TotalProgramServiceExpensesAmt | 0 | 10903 |
| IRS990/TotalProgramServiceRevenueAmt | 0 | 95 |
| IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 28297 |
| IRS990/TotalRevenueGrp/TotalRevenueColumnAmt | 0 | 35910 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt | 0 | 515197 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 581556 |
| IRS990/TrnsfrExmptNonChrtblRltdOrgInd | 0 | false |
| IRS990/TypeOfOrganizationCorpInd | 0 | X |
| IRS990/UnrelatedBusIncmOverLimitInd | 0 | false |
| IRS990/UnrestrictedNetAssetsGrp/BOYAmt | 0 | 515196 |
| IRS990/UnrestrictedNetAssetsGrp/EOYAmt | 0 | 581555 |
| IRS990/UponRequestInd | 0 | X |
| IRS990/USAddress/AddressLine1 | 0 | 278 GRANTSDALE RD |
| IRS990/USAddress/City | 0 | HAMILTON |
| IRS990/USAddress/State | 0 | MT |
| IRS990/USAddress/ZIPCode | 0 | 59840 |
| IRS990/VotingMembersGoverningBodyCnt | 0 | 7 |
| IRS990/VotingMembersIndependentCnt | 0 | 7 |
| IRS990/WhistleblowerPolicyInd | 0 | false |
| ReturnHeader/BuildTS | 0 | 2015-11-30 17:44:51Z |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | JONI LODMELL |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | CHAIRPERSON |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2014-09-23 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1 | 0 | BITTERROOT PUBLIC LIBRARY |
| ReturnHeader/Filer/BusinessName/BusinessNameLine2 | 0 | FOUNDATION INC |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | BITT |
| ReturnHeader/Filer/EIN | 0 | 363687402 |
| ReturnHeader/Filer/USAddress/AddressLine1 | 0 | 306 STATE STREET |
| ReturnHeader/Filer/USAddress/City | 0 | HAMILTON |
| ReturnHeader/Filer/USAddress/State | 0 | MT |
| ReturnHeader/Filer/USAddress/ZIPCode | 0 | 59840 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 816022996 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1 | 0 | OWINGS & DAVIS CPA'S PLLP |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1 | 0 | 178 SOUTH THIRD |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/City | 0 | HAMILTON |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/State | 0 | MT |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCode | 0 | 59840 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 4063632225 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2014-09-23 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | DOUGLAS J DAVIS |
| ReturnHeader/ReturnTs | 0 | 2014-09-24T15:49:06-05:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990 |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2013-07-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2014-06-30 |
| ReturnHeader/TaxYr | 0 | 2013 |