Liabilities / Assets
22nd percentile
Higher debt load relative to assets than 22% of similar nonprofits.
EIN 20-1849324 • 501(c)3 • Mackinaw City, MI
Profile
To obtain the uscgc mackinaw and convert it into a museum. This museum will collect, preserve, protect and interpret the history of the coast guard presence on the great lakes from the early 1940's to the present.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
22nd percentile
Higher debt load relative to assets than 22% of similar nonprofits.
Liabilities / Revenue
30th percentile
Higher debt load relative to revenue than 30% of similar nonprofits.
Net Margin
17th percentile
Higher net margin than 17% of similar nonprofits.
Top Officer Pay
40th percentile
Higher top officer pay than 40% of similar nonprofits.
Top officer pay equals 0.0% of source-year revenue.
Asset Growth
35th percentile
Faster asset growth than 35% of similar nonprofits.
Revenue Growth
27th percentile
Faster revenue growth than 27% of similar nonprofits.
Assets
Down$2,215,102
Down $24,809 (-1.1%) from 2022
Liabilities
Down$2,383
Down $1,049 (-31%) from 2022
Net Assets
Down$2,212,719
Down $23,760 (-1.1%) from 2022
Revenue
Down$222,976
Down $14,302 (-6.0%) from 2022
Expenses
Down$257,900
Down $13,423 (-4.9%) from 2022
Net Income
Down-$34,924
Down $879 (-2.6%) from 2022
Most recent year
2023 • Form 990Detailed filing. Detailed filing data is available for this year.
To obtain the uscgc mackinaw and convert it into a museum. This museum will collect, preserve, protect and interpret the history of the coast guard presence on the great lakes from the early 1940's to the present.
To preserve the legacy of the mackinaw wagb 83 and her crew by operating uscgc mackinaw as a museum. This museum collects, preserves, protects and interprets the history of the coast guard presence on the great lakes from the early 1940's to the present.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Land, Buildings, and Equipment, Net | $2,010,544 | $1,992,487 | ▼ $18,057 |
| Savings and Temporary Cash Investments | $5,221 | $105,221 | ▲ $100,000 |
| Cash and Non-Interest-Bearing Accounts | $207,314 | $98,742 | ▼ $108,572 |
| Inventories for Sale or Use | $16,735 | $16,735 | → $0 |
| Accounts Receivable | $97 | $1,917 | ▲ $1,820 |
| Total Assets | $2,239,911 | $2,215,102 | ▼ $24,809 |
| Liabilities | |||
| Other Liabilities | $3,432 | $2,383 | ▼ $1,049 |
| Total Liabilities | $3,432 | $2,383 | ▼ $1,049 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $2,236,479 | $2,212,719 | ▼ $23,760 |
| Total Net Assets Fund Balance | $2,236,479 | $2,212,719 | ▼ $23,760 |
| Total Liabilities and Net Assets / Fund Balance | $2,239,911 | $2,215,102 | ▼ $24,809 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Other Land Buildings | $1,714,329 | - | $1,714,329 |
| Equipment | $258,079 | $235,582 | $493,661 |
| Leasehold Improvements | $20,079 | - | $20,079 |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2022 | $5,221 | - | - | - | $5,221 |
| 2021 | $4,617 | - | ▲ $673 | - | $5,221 |
| 2020 | $4,217 | - | ▲ $413 | - | $4,617 |
| 2019 | $3,573 | - | ▲ $693 | - | $4,217 |
| Name | Title |
|---|---|
| William Marvin | President |
| Adam Price | Director |
| Chris Shepler | Director |
| Jim Stevens | Director |
| Mike Davanzo | Director |
| Linda Rogers | Secretary |
| Thomas Spaude | Treasurer |
| David Morthland | Vice Preside |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $165,143 |
| Other Expenses | $92,757 |
| Total Fundraising Expense | $477 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $88,354 | $53,359 | - | $141,713 |
| Occupancy | $23,316 | $3,535 | - | $26,851 |
| Advertising | $19,569 | - | - | $19,569 |
| Payroll Taxes | $7,356 | $11,034 | - | $18,390 |
| Depreciation Depletion | $18,059 | - | - | $18,059 |
| Other Employee Benefits | - | $5,040 | - | $5,040 |
| Insurance | $1,934 | $1,934 | - | $3,868 |
| Office Expenses | $2,385 | $763 | - | $3,148 |
| All Other Expenses | $1,373 | $1,131 | $477 | $2,981 |
| Other Expenses | $1,839 | $7,305 | - | $1,839 |
| Fees for Services Accounting | - | $1,750 | - | $1,750 |
| Travel | - | $413 | - | $413 |
| Interest | - | $68 | - | $68 |
| Total Functional Expenses | $171,091 | $86,332 | $477 | $257,900 |
| Line Item | Amount |
|---|---|
| Fundraising Gross Income | $2,418 |
| Professional Fundraising Fees | $0 |
| Interested Party | Relationship | Description | Shared Revenue | Amount |
|---|---|---|---|---|
| - | Director | Docking & Repair Exp | No | $1,788 |
| Liability | Amount |
|---|---|
| Payroll Liabilities | $2,670 |
| Sales Tax Payable | $289 |
| Security Deposits | $285 |
| Credit Card Payable | $-861 |
“A copy of the form 990 is provided to the board members prior to it being filed. The board reviews the form 990. If they have any issues/questions they relay them to the accountant who prepared the form 990 for fixing/clarification. If there are not any issues/questions, the treasurer signs the necessary authorization forms to electronically submit the form 990 and returns them to the accoutant who prepared the form 990 for submission.”
“Periodic reviews completed to determine whether partnerships, joint ventures, and arrangements with management organizations conform to icebreaker mackinaw maritime museum, inc.'s written policies, are properly recorded, reflect reasonable investment or payments for goods or services, further charitable purposes and do not result in inurement, impermissible private benefit or in an excess benefit transaction.”
“All governing documents are made available to the public upon request.”
“To preserve the legacy of the mackinaw wagb 83 and her crew by operating uscgc mackinaw as a museum. This museum collects, preserves, protects and interprets the history of the coast guard presence on the great lakes from the early 1940's to the present.”
“Many volunteers assist the organization with museum tours, staff assistance, and unpaid positions for the operation of the ship and museum.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 97 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 1917 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | TO PRESERVE THE LEGACY OF THE MACKINAW WAGB 83 AND HER CREW BY OPERATING USCGC MACKINAW AS A MUSEUM. THIS MUSEUM COLLECTS, PRESERVES, PROTECTS AND INTERPRETS THE HISTORY OF THE COAST GUARD PRESENCE ON THE GREAT LAKES FROM THE EARLY 1940'S TO THE PRESENT. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 19569 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 19569 |
| IRS990/AllOtherContributionsAmt | 0 | 4359 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 477 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 1131 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 1373 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 2981 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | RANDY POWERS |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2314369825 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 131 S HURON AVENUE |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | MACKINAW CITY |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MI |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 49701 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | true |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 207314 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 98742 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | true |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CostOfGoodsSoldAmt | 0 | 34969 |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 25305 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 63 |
| IRS990/CYOtherExpensesAmt | 0 | 92757 |
| IRS990/CYOtherRevenueAmt | 0 | 40567 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 157041 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -34924 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 165143 |
| IRS990/CYTotalExpensesAmt | 0 | 257900 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 477 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 222976 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 18059 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 18059 |
| IRS990/Desc | 0 | THE CORPORATION IS FORMED TO PURSUE THE ACQUISITION OF THE USCGC MACKINAW FOLLOWING HER DECOMISSIONING BY THE FEDERAL GOVERNMENT. ALL OF THE INTERPRETIVE PROGRAMS WILL PRESENT AND SEEK TO EDUCATE THE VISITOR, IN AN ENTERTAINING WAY, ON THE IMPORTANCE OF BOTH THE US COAST GUARD ACTIVITY ONT HE GREAT LAKES AND THE ECONOMIC AND ECOLOGIC IMPORTANCE OF THE LAKES THEMSELVES TO THE QUALITY OF LIFE IN AREA OF THE STRAITS OF MACKINAC IN THE STATE OF MICHIGAN. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | false |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | true |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 13 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 171091 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 1750 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 1750 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 1.00 |
| 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/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/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/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | MIKE DAVANZO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | WILLIAM MARVIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | DAVID MORTHLAND |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | ADAM PRICE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | LINDA ROGERS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | CHRIS SHEPLER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | THOMAS SPAUDE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | JIM STEVENS |
| 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/ReportableCompFromOrgAmt | 7 | 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/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | VICE PRESIDE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | DIRECTOR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 2004 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/FundraisingGrossIncomeAmt | 0 | 2418 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 8 |
| IRS990/GovernmentGrantsAmt | 0 | 5000 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 257945 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 71556 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 8 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 1934 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 1934 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 3868 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 68 |
| IRS990/InterestGrp/TotalAmt | 0 | 68 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 16735 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 16735 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 63 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 63 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/IRPDocumentCnt | 0 | 1 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 235582 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 2010544 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 1992487 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 2228069 |
| IRS990/LegalDomicileStateCd | 0 | MI |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembershipDuesAmt | 0 | 15946 |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | TO PRESERVE THE LEGACY OF THE MACKINAW WAGB 83 AND HER CREW BY OPERATING USCGC MACKINAW AS A MUSEUM. THIS MUSEUM COLLECTS, PRESERVES, PROTECTS AND INTERPRETS THE HISTORY OF THE COAST GUARD PRESENCE ON THE GREAT LAKES FROM THE EARLY 1940'S TO THE PRESENT. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 2236479 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 2212719 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | 2418 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 2418 |
| IRS990/NetIncomeOrLossGrp/ExclusionAmt | 0 | 36587 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 36587 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 2236479 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 2212719 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 3535 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 23316 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 26851 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 763 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 2385 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 3148 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 5040 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 5040 |
| IRS990/OtherExpensesGrp/Desc | 0 | DUES & SUBSCRIPTIONS |
| IRS990/OtherExpensesGrp/Desc | 1 | SQUARE FEES |
| IRS990/OtherExpensesGrp/Desc | 2 | MISC EXPENSE |
| IRS990/OtherExpensesGrp/Desc | 3 | SHIP SUPPLIES |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 7305 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 4641 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 2265 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 1839 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 7305 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 4641 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 2265 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 1839 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 3432 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 2383 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | CREDIT CARD REWARDS |
| IRS990/OtherRevenueMiscGrp/Desc | 1 | MISC INCOME |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 0 | 865 |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 1 | 697 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 865 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 1 | 697 |
| IRS990/OtherRevenueTotalAmt | 0 | 1562 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 53359 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 88354 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 141713 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 11034 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 7356 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 18390 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrincipalOfficerNm | 0 | THOMAS SPAUDE |
| IRS990/PriorPeriodAdjustmentsAmt | 0 | 11164 |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 713990 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | ADMISSISONS |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | RAFFLE |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 154381 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 2660 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 154381 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 2660 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 25837 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYInvestmentIncomeAmt | 0 | 25 |
| IRS990/PYOtherExpensesAmt | 0 | 111109 |
| IRS990/PYOtherRevenueAmt | 0 | 52712 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 158704 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -34045 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 160214 |
| IRS990/PYTotalExpensesAmt | 0 | 271323 |
| IRS990/PYTotalRevenueAmt | 0 | 237278 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -34924 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 157041 |
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| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 105221 |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 0 | OTHER INCOME 323,687 |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 0 | PART II, LINE 10 |
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| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 25837 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 85808 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 73701 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 11912 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 222563 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 63 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 25 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 865 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 290 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 84 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 1327 |
| IRS990ScheduleA/GrossReceiptsRltdActivitiesAmt | 0 | 840578 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearAmt | 0 | 75536 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 88801 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 101847 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 56609 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 76430 |
| IRS990ScheduleA/OtherIncome170Grp/TotalAmt | 0 | 399223 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.35720 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 0.56990 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 222563 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 25305 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 25837 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 85808 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 73701 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 11912 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 222563 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 623113 |
| IRS990/ScheduleBRequiredInd | 0 | false |
| IRS990ScheduleD/CollectionUsedPubExhibitionInd | 0 | X |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 5221 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 5221 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 69 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 4617 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 5221 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 673 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 13 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 4217 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 4617 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 413 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 49 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 3573 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 4217 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 693 |
| IRS990ScheduleD/EndowmentsHeldRelatedOrgInd | 0 | false |
| IRS990ScheduleD/EndowmentsHeldUnrelatedOrgInd | 0 | true |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 258079 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 235582 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 493661 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/BookValueAmt | 0 | 20079 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/OtherCostOrOtherBasisAmt | 0 | 20079 |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 1714329 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 1714329 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 2670 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 1 | 289 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 2 | 285 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 3 | -861 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | PAYROLL LIABILITIES |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 1 | SALES TAX PAYABLE |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 2 | SECURITY DEPOSITS |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 3 | CREDIT CARD PAYABLE |
| IRS990ScheduleD/PrmnntEndowmentBalanceEOYPct | 0 | 0.54000 |
| IRS990ScheduleD/SolicitedAssetsSaleInd | 0 | false |
| IRS990ScheduleD/TermEndowmentBalanceEOYPct | 0 | 0.46000 |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 1992487 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 2383 |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/NameOfInterested/BusinessName/BusinessNameLine1Txt | 0 | SHEPLERS FERRY SERVICE |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/RelationshipDescriptionTxt | 0 | DIRECTOR |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/SharingOfRevenuesInd | 0 | false |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/TransactionAmt | 0 | 1788 |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/TransactionDesc | 0 | DOCKING & REPAIR EXP |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | TO PRESERVE THE LEGACY OF THE MACKINAW WAGB 83 AND HER CREW BY OPERATING USCGC MACKINAW AS A MUSEUM. THIS MUSEUM COLLECTS, PRESERVES, PROTECTS AND INTERPRETS THE HISTORY OF THE COAST GUARD PRESENCE ON THE GREAT LAKES FROM THE EARLY 1940'S TO THE PRESENT. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | MANY VOLUNTEERS ASSIST THE ORGANIZATION WITH MUSEUM TOURS, STAFF ASSISTANCE, AND UNPAID POSITIONS FOR THE OPERATION OF THE SHIP AND MUSEUM. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | A COPY OF THE FORM 990 IS PROVIDED TO THE BOARD MEMBERS PRIOR TO IT BEING FILED. THE BOARD REVIEWS THE FORM 990. IF THEY HAVE ANY ISSUES/QUESTIONS THEY RELAY THEM TO THE ACCOUNTANT WHO PREPARED THE FORM 990 FOR FIXING/CLARIFICATION. IF THERE ARE NOT ANY ISSUES/QUESTIONS, THE TREASURER SIGNS THE NECESSARY AUTHORIZATION FORMS TO ELECTRONICALLY SUBMIT THE FORM 990 AND RETURNS THEM TO THE ACCOUTANT WHO PREPARED THE FORM 990 FOR SUBMISSION. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | PERIODIC REVIEWS COMPLETED TO DETERMINE WHETHER PARTNERSHIPS, JOINT VENTURES, AND ARRANGEMENTS WITH MANAGEMENT ORGANIZATIONS CONFORM TO ICEBREAKER MACKINAW MARITIME MUSEUM, INC.'S WRITTEN POLICIES, ARE PROPERLY RECORDED, REFLECT REASONABLE INVESTMENT OR PAYMENTS FOR GOODS OR SERVICES, FURTHER CHARITABLE PURPOSES AND DO NOT RESULT IN INUREMENT, IMPERMISSIBLE PRIVATE BENEFIT OR IN AN EXCESS BENEFIT TRANSACTION. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 4 | ALL GOVERNING DOCUMENTS ARE MADE AVAILABLE TO THE PUBLIC UPON REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990 - ORGANIZATION'S MISSION |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PAGE 1, PART I, LINE 6 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PAGE 6, PART VI, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990, PAGE 6, PART VI, LINE 12C |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 4 | FORM 990, PAGE 6, PART VI, LINE 19 |
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| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/StatesWhereCopyOfReturnIsFldCd | 0 | MI |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | false |
| IRS990/SubjectToProxyTaxInd | 0 | false |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
| IRS990/TerminateOperationsInd | 0 | false |
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| IRS990/TotalAssetsEOYAmt | 0 | 2215102 |
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| IRS990/TotalAssetsGrp/EOYAmt | 0 | 2215102 |
| IRS990/TotalCompGreaterThan150KInd | 0 | false |
| IRS990/TotalContributionsAmt | 0 | 25305 |
| IRS990/TotalEmployeeCnt | 0 | 13 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 477 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 86332 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 171091 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 257900 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesBOYAmt | 0 | 3432 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 2383 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 3432 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 2383 |
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| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 2212719 |
| IRS990/TotalProgramServiceExpensesAmt | 0 | 171091 |
| IRS990/TotalProgramServiceRevenueAmt | 0 | 157041 |
| IRS990/TotalRevenueGrp/ExclusionAmt | 0 | 40630 |
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| IRS990/TotalVolunteersCnt | 0 | 7 |
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| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 2215102 |
| IRS990/TravelGrp/ManagementAndGeneralAmt | 0 | 413 |
| IRS990/TravelGrp/TotalAmt | 0 | 413 |
| IRS990/TrnsfrExmptNonChrtblRltdOrgInd | 0 | false |
| IRS990/TypeOfOrganizationCorpInd | 0 | X |
| IRS990/UnrelatedBusIncmOverLimitInd | 0 | false |
| IRS990/UponRequestInd | 0 | X |
| IRS990/USAddress/AddressLine1Txt | 0 | 789 BRIDGEVIEW |
| IRS990/USAddress/CityNm | 0 | SAGINAW |
| IRS990/USAddress/StateAbbreviationCd | 0 | MI |
| IRS990/USAddress/ZIPCd | 0 | 48603 |
| IRS990/VotingMembersGoverningBodyCnt | 0 | 8 |
| IRS990/VotingMembersIndependentCnt | 0 | 8 |
| IRS990/WebsiteAddressTxt | 0 | WWW.THEMACKINAW.ORG |
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