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| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 101751 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 568176 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 448561 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | THE NATIONAL PRECAST CONCRETE ASSOCIATION IS DEDICATED TO EXPANDING THE USE OF QUALITY PRECAST CONCRETE THROUGH INDUSTRY LEADERSHIP IN IDENTIFYING OPPORTUNITIES AND ADDRESSING CHALLENGES, AND SUPPORT OF MEMBERS. |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 193812 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 171897 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | CLAUDIA T HUNTER CPA |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 3175719500 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 1320 CITY CENTER DRIVE SUITE 200 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | CARMEL |
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| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 46032 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
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| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 325722 |
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| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 1410418 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/CostOfGoodsSoldAmt | 0 | 58024 |
| IRS990/CreditCounselingInd | 0 | 0 |
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| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 2501 |
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| IRS990/CYOtherRevenueAmt | 0 | 52467 |
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| IRS990/CYTotalExpensesAmt | 0 | 6330703 |
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| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 6183047 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 1 |
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| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 4106558 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 4325899 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
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| IRS990/Desc | 0 | THE PRECAST SHOW IS THE LARGEST EVENT SPECIFICALLY FOR THE PRECAST CONCRETE INDUSTRY. IT'S THE ONLY EVENT THAT BRINGS TOGETHER THE ENTIRE INDUSTRY UNDER ONE ROOF. IF YOU'RE A PRECASTER OR PIPE PRODUCER, THE PRECAST SHOW IS A CAN'T MISS NETWORKING OPPORTUNITY FOR DISTRIBUTORS, SUPPLIERS, INDUSTRY LEADERS AND YOUR PEERS FROM ACROSS NORTH AMERICA AND THROUGHOUT THE WORLD. THE PRECAST SHOW OFFERS UNMATCHED EDUCATIONAL OPPORTUNITIES FOR ALL SECTORS OF THE PRECAST CONCRETE INDUSTRY. DOZENS OF EDUCATIONAL TRACKS COVER THE LATEST TECHNICAL, MANAGEMENT AND LEADERSHIP TOPICS. |
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| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 25 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 32810 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 14845 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 51289 |
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| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| 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/AverageHoursPerWeekRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 40.00 |
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| 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/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/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | 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 |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 27300 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 9764 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 9182 |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | DARRIN CARY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | LEO FEUERSTEIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | K SCOTT HAYWARD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | PAUL HEIDT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | MICHAEL HOFFMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | ROY KOHLIER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JONATHAN OHMES |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | GREG ROACHE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | TERRI RONDEAU |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | ASHLEY SMITH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | KEITH WOMACK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | TY E GABLE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | CLAUDIA HUNTER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | BRENDA IBITZ |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | RICHARD KROLEWSKI |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 210810 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 108636 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 220309 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 112650 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 15 | 0 |
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| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | PRESIDENT - EX OFFICIO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | VP FINANCE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | VP DEVELOPMENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | DIRECTOR OF CERTIFICATION |
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| IRS990/Form990TFiledInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1965 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
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| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -1197 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 13 |
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| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 10386 |
| IRS990/GrossReceiptsAmt | 0 | 6252654 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 82374 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
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| IRS990/IndoorTanningServicesInd | 0 | 0 |
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| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
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| IRS990/InsuranceGrp/TotalAmt | 0 | 9260 |
| IRS990/IntangibleAssetsGrp/BOYAmt | 0 | 72186 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 75486 |
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| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 37546 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 89803 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 89803 |
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| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 3367620 |
| IRS990/IRPDocumentCnt | 0 | 26 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
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| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 513609 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 498618 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 1277392 |
| IRS990/LegalDomicileStateCd | 0 | IN |
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| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 1 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembershipDuesAmt | 0 | 1389094 |
| IRS990/MembersOrStockholdersInd | 0 | 1 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | THE NATIONAL PRECAST CONCRETE ASSOCIATION IS DEDICATED TO EXPANDING THE USE OF QUALITY PRECAST CONCRETE THROUGH INDUSTRY LEADERSHIP IN IDENTIFYING OPPORTUNITIES AND ADDRESSING CHALLENGES, AND SUPPORT OF MEMBERS. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
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| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 2206091 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | -1197 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -1197 |
| IRS990/NetIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 24350 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 24350 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 28837 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 43391 |
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| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 64524 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501cInd | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 44334 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 9888 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 177941 |
| IRS990/OtherExpensesGrp/Desc | 0 | PLANT CERTIFICATION |
| IRS990/OtherExpensesGrp/Desc | 1 | PUBLICATION AND DIRECTO |
| IRS990/OtherExpensesGrp/Desc | 2 | BOARD DESIGNATED PROGRA |
| IRS990/OtherExpensesGrp/Desc | 3 | VOLUNTEER ACTIVITY COST |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 1324107 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 275629 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 229288 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 229096 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 31060 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 197 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 852916 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 147915 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 84060 |
| IRS990/PoliciesReferenceChaptersInd | 0 | 0 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 442920 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 668781 |
| IRS990/PrincipalOfficerNm | 0 | TY E GABLE |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
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| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 541800 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 3 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 4 | 611430 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | PRECAST SHOW |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | PLANT CERTIFICATION RE |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | PUBLICATION AND DIRECT |
| IRS990/ProgramServiceRevenueGrp/Desc | 3 | REGISTRATION AND SPONS |
| IRS990/ProgramServiceRevenueGrp/Desc | 4 | EDUCATIONAL SEMINAR IN |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 1846047 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 1485571 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 2 | 309879 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 3 | 163066 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 1846047 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 1485571 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 826977 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 3 | 309879 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 4 | 163066 |
| IRS990/ProgramServiceRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 826977 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | NPCA CONNECTS LEADERS IN THE MANUFACTURED CONCRETE INDUSTRY AND PROVIDES EDUCATIONAL, LEADERSHIP AND NETWORKING OPPORTUNITIES. IF THERE'S A TREND IN THE INDUSTRY, NPCA WILL INFORM OUR MEMBERS ABOUT IT. IF THERE ARE LEGISLATIVE DECISIONS BEING MADE THAT CAN HELP OR HURT YOUR BUSINESS, NPCA WILL HELP YOU UNDERSTAND THE ISSUES. NPCA KEEPS YOU UP TO DATE ON EMERGING SAFETY AND TECHNICAL ISSUES THAT WILL HELP YOUR BUSINESS STRENGTHEN AND GROW. NPCA IS GOOD FOR YOUR BUSINESS.NPCA OFFERS THREE TYPES OF MEMBERSHIP, EACH DESIGNED TO MEET MEMBER'S SPECIFIC NEEDS (SEE SCHEDULE O FOR DETAIL):PRODUCER MEMBERTHIS CATEGORY IS FOR MANUFACTURERS OF PRECAST CONCRETE PRODUCTS.ASSOCIATE MEMBERMEMBERS IN THIS CATEGORY INCLUDE BUSINESSES THAT MANUFACTURE A PRODUCT OR DELIVER A SERVICE RELATED TO THE PRECAST CONCRETE INDUSTRY.PROFESSIONAL MEMBERTHIS TYPE OF MEMBERSHIP IS FOR INDIVIDUAL DESIGN PROFESSIONALS AND OTHERS WITH AN INTEREST IN THE PRECAST CONCRETE INDUSTRY, SUCH AS ARCHITECTS, ENGINEERS, REGULATORS AND EDUCATORS. |
| IRS990/ProgSrvcAccomActy3Grp/Desc | 0 | FROM START TO FINISH, THE NPCA CERTIFICATION PROGRAM IS DEDICATED TO SETTING THE HIGHEST STANDARDS FOR PLANT FACILITIES, PRODUCTION OPERATIONS AND QUALITY CONTROL PROCEDURES. QUALITY-CONSCIOUS ARCHITECTS, ENGINEERS AND USERS KNOW THAT PRODUCTS SELECTED FROM NPCA-CERTIFIED PLANTS ARE MANUFACTURED TO EXACTING REQUIREMENTS FOR UNCOMPROMISING STRENGTH, DURABILITY AND FINISH. |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 1396474 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 6628 |
| IRS990/PYInvestmentIncomeAmt | 0 | 77434 |
| IRS990/PYOtherExpensesAmt | 0 | 4023533 |
| IRS990/PYOtherRevenueAmt | 0 | 51798 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 4687721 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -20732 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 2203998 |
| IRS990/PYTotalExpensesAmt | 0 | 6234159 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 6213427 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -147656 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 1 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 1 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/RoyaltiesRevenueGrp/ExclusionAmt | 0 | 28117 |
| IRS990/RoyaltiesRevenueGrp/TotalRevenueColumnAmt | 0 | 28117 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 1411563 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 1201716 |
| IRS990/ScheduleBRequiredInd | 0 | 0 |
| IRS990ScheduleC/AgreeCarryoverPriorYearInd | 0 | 0 |
| IRS990ScheduleC/OnlyInHouseLobbyingInd | 0 | 1 |
| IRS990ScheduleC/SubstantiallyAllDuesNondedInd | 0 | 0 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 399756 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 731475 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 1131231 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 61854 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 6330703 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/LeaseholdImprovementsGrp/BookValueAmt | 0 | 30862 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/DepreciationAmt | 0 | 47299 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/OtherCostOrOtherBasisAmt | 0 | 78161 |
| IRS990ScheduleD/NetUnrealizedGainsInvstAmt | 0 | 43391 |
| IRS990ScheduleD/OtherExpensesIncludedAmt | 0 | 61854 |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 68000 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 68000 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 197 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | PAYABLE TO AFFILIATE |
| IRS990ScheduleD/OtherRevenueAmt | 0 | 61854 |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 105245 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 0 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 6183047 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | THE ASSOCIATION IS A NOT-FOR-PROFIT TRADE ORGANIZATION, AND IS EXEMPT FROM INCOME TAX UNDER SECTION 501(C)(6) OF THE U.S. INTERNAL REVENUE CODE. HOWEVER, THE ASSOCIATION DOES PAY INCOME TAXES ON UNRELATED BUSINESS INCOME. FEDERAL AND STATE INCOME TAXES ON UNRELATED BUSINESS INCOME, IF APPLICABLE, ARE CALCULATED AT THE STATUTORY TAX RATES. THE ASSOCIATION INDIVIDUALLY EVALUATES ITS ACTIVITIES TO DETERMINE THAT THEY ARE IN COMPLIANCE WITH ITS TAX-EXEMPT PURPOSES. CURRENTLY, THE ASSOCIATION'S MANAGEMENT BELIEVES ANY ACTIVITIES THAT WOULD GENERATE UNRELATED BUSINESS INCOME ARE EFFECTIVELY REPORTED AND TAX OWED, IF ANY, IS PROPERLY PAID. THE ASSOCIATION'S MANAGEMENT DOES NOT BELIEVE IT IS ENGAGED IN ANY ACTIVITIES THAT WOULD CREATE UNCERTAIN TAX POSITIONS. ALL TAX PERIODS PRIOR TO 2011 ARE NO LONGER SUBJECT TO EXAMINATION. |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | COST OF GOODS SOLD 58,024. LOSS ON SALE OF FIXED ASSET 3,830. |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 2 | COST OF GOODS SOLD 58,024. LOSS ON SALE OF FIXED ASSET 3,830. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART X, LINE 2: |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | PART XI, LINE 2D - OTHER ADJUSTMENTS: |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | PART XII, LINE 2D - OTHER ADJUSTMENTS: |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 498618 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 6330703 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 197 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 6183047 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 6288292 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 6392557 |
| IRS990ScheduleJ/BoardOrCommitteeApprovalInd | 0 | X |
| IRS990ScheduleJ/CompensationSurveyInd | 0 | X |
| IRS990ScheduleJ/EquityBasedCompArrngmInd | 0 | 0 |
| IRS990/ScheduleJRequiredInd | 0 | 1 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 0 | 210810 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 1 | 220309 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990FilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990FilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990RltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990RltdOrgsAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 0 | 11786 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 1 | 9764 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 0 | TY E GABLE |