Liabilities / Assets
Score unavailable
Liabilities-to-assets requires both liabilities and assets on the latest valid filing.
EIN 11-1630813 • 501(c)3 • Brooklyn, NY
Profile
Housed in a magnificent landmark building in brooklyn heights designed by george post in 1878 and completed in 1881, brooklyn historical society (bhs) maintains an important collection of archival documents, photographs, maps, books, artifacts and paintings relating to national and local history we draw from these holdings to create interpretive exhibitions that prompt visitors to reconsider the fundamental facts of history in light of primary source documents and artifacts.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
Score unavailable
Liabilities-to-assets requires both liabilities and assets on the latest valid filing.
Liabilities / Revenue
20th percentile
Tied with the lowest-debt nonprofits in its peer group.
Net Margin
39th percentile
Higher net margin than 39% of similar nonprofits.
Top Officer Pay
95th percentile
Higher top officer pay than 95% of similar nonprofits.
Top officer pay equals 25.0% of source-year revenue.
Asset Growth
2nd percentile
Faster asset growth than 2% of similar nonprofits.
Revenue Growth
88th percentile
Faster revenue growth than 88% of similar nonprofits.
Assets
Down$0
Down $16,385,660 (-100%) from 2022
Liabilities
Down$0
Down $1,396,953 (-100%) from 2022
Net Assets
Down$0
Down $14,988,707 (-100%) from 2022
Revenue
Up$1,349,746
Up $581,359 (+76%) from 2022
Expenses
Down$1,349,746
Down $400,492 (-23%) from 2022
Net Income
Up$0
Up $981,851 (+100%) from 2022
Most recent year
2023 • Form 990Detailed filing. Detailed filing data is available for this year.
Housed in a magnificent landmark building in brooklyn heights designed by george post in 1878 and completed in 1881, brooklyn historical society (bhs) maintains an important collection of archival documents, photographs, maps, books, artifacts and paintings relating to national and local history we draw from these holdings to create interpretive exhibitions that prompt visitors to reconsider the fundamental facts of history in light of primary source documents and artifacts bhs serves almost 80,000 people annually by providing opportunities for civic dialogue and community engagement for children and adults through exhibit tours, public programming, research opportunities, educational programs for new york city students and professional development workshops and written curricula for new york city teachers.
Make the vibrant history of brooklyn tangible, relevant and meaningful for today's diverse communities and for generations to come.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Land, Buildings, and Equipment, Net | $15,718,351 | $0 | ▼ $15,718,351 |
| Savings and Temporary Cash Investments | $491,134 | $0 | ▼ $491,134 |
| Cash and Non-Interest-Bearing Accounts | $81,226 | $0 | ▼ $81,226 |
| Pledges and Grants Receivable | $35,750 | $0 | ▼ $35,750 |
| Accounts Receivable | $31,908 | $0 | ▼ $31,908 |
| Prepaid Expenses and Deferred Charges | $27,291 | $0 | ▼ $27,291 |
| Other Notes and Loans Receivable, Net | - | $0 | - |
| Receivable From Disqualified Prsn | - | $0 | - |
| Receivables From Officers Etc | - | $0 | - |
| Investments Other Securities | - | $0 | - |
| Investments Program Related | - | $0 | - |
| Investments in Publicly Traded Securities | - | $0 | - |
| Intangible Assets | - | $0 | - |
| Inventories for Sale or Use | - | $0 | - |
| Total Assets | $16,385,660 | $0 | ▼ $16,385,660 |
| Other Assets Total | - | $0 | - |
| Liabilities | |||
| Other Liabilities | $1,158,494 | $0 | ▼ $1,158,494 |
| Accounts Payable and Accrued Expenses | $238,459 | - | - |
| Total Liabilities | $1,396,953 | $0 | ▼ $1,396,953 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $14,454,448 | $0 | ▼ $14,454,448 |
| Net Assets With Donor Restrictions | $534,259 | $0 | ▼ $534,259 |
| Total Net Assets Fund Balance | $14,988,707 | $0 | ▼ $14,988,707 |
| Total Liabilities and Net Assets / Fund Balance | $16,385,660 | $0 | ▼ $16,385,660 |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2022 | $122,072 | - | - | - | - |
| 2021 | $122,072 | - | - | - | $122,072 |
| 2020 | $122,072 | - | - | - | $122,072 |
| 2019 | $1,064,346 | - | - | $942,274 | $122,072 |
| 2018 | $1,064,346 | - | ▲ $77,544 | $77,544 | $1,064,346 |
| Name | Title |
|---|---|
| Miriam Katowitz - Until 61323 | Chair |
| Heather Malin - Until 61323 | Director |
| Alan Nisselson - Until 61323 | Trustee |
| Karen Sheehan - Until 61323 | CFO |
| Sandra Schubert - Until 61323 | Secretary |
| Contractor | Services | Location | Compensation |
|---|---|---|---|
| Brooklyn Public Library | Administrative Services | 10 GRAND ARMY PLAZA, Brooklyn, NY 11238 | $220,000 |
| Line Item | Amount |
|---|---|
| Grants and Similar Amounts Paid | $692,006 |
| Other Expenses | $657,740 |
| Professional Fundraising Fees | $0 |
| Salaries, Compensation, and Employee Benefits | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Grants to Domestic Orgs | $692,006 | - | - | $692,006 |
| Payments to Affiliates | - | $220,000 | - | $220,000 |
| Depreciation Depletion | $153,488 | - | - | $153,488 |
| Insurance | $16,115 | $85,177 | - | $101,292 |
| Office Expenses | $12,310 | $39,457 | - | $51,767 |
| Occupancy | $14,798 | $12,107 | - | $26,905 |
| Interest | - | $18,715 | - | $18,715 |
| Fees for Services Accounting | - | $5,985 | - | $5,985 |
| Other Expenses | $6,205 | $2,380 | - | $2,380 |
| Total Functional Expenses | $939,470 | $410,276 | $0 | $1,349,746 |
| Recipient | Location | Category | Purpose | Amount |
|---|---|---|---|---|
| Brooklyn Public Library | Brooklyn, NY | 501(c)(3) | DISSOLUTIONON JUNE 13, 2023, THE BROOKLYN PUBLIC LIBRARY WAS FORMALLY MERGED WITH THE BROOKLYN HISTORICAL SOCIETY (THE "SOCIETY") UNDER THE CHARTER OF THE NEW YORK STATE BOARD OF REGENTS. BROOKLYN PUBLIC LIBRARY, THE SURVIVING ENTITY, WILL CONTINUE TO ADMINISTER THE PURPOSES OF THE MERGED ENTITIES. PRIOR TO THE MERGER, ON OCTOBER 1, 2020, THE LIBRARY ENTERED INTO AN AFFILIATION AGREEMENT WITH THE SOCIETY WHEREBY THE SOCIETY RE-ORGANIZED ITS CORPORATE STRUCTURE AS A MEMBERSHIP ORGANIZATION AND WHEREBY THE LIBRARY BECAME THE SOLE CORPORATE MEMBER OF THE SOCIETY ON THE DATE OF THE AFFILIATION AGREEMENT. IN ACCORDANCE WITH ACCOUNTING PRINCIPLES GENERALLY ACCEPTED IN THE UNITED STATES OF AMERICA ("U.S. GAAP"), THE LIBRARY ACCOUNTED FOR THE AFFILIATION AGREEMENT AS THOUGH THE LIBRARY ACQUIRED THE SOCIETY, AS OF THE AFFILIATION DATE, AND IN DOING SO, THE LIBRARY RECOGNIZED $15,819,686 IN NET ASSETS ON THE DATE OF THE AFFILIATION AGREEMENT AT FAIR VALUE. | $692,006 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
| Line Item | Beginning | End | Change |
|---|---|---|---|
| Receivables from Disqualified Persons | - | $0 | - |
| Receivables from Officers, Directors, Trustees, and Key Employees | - | $0 | - |
“On june 13, 2023, the brooklyn public library was formally merged with the brooklyn historical society (the "society") under the charter of the new york state board of regents. Brooklyn public library, the surviving entity, will continue to administer the purposes of the merged entities. Prior to the merger, on october 1, 2020, the library entered into an affiliation agreement with the society whereby the society re-organized its corporate structure as a membership organization and whereby the library became the sole corporate member of the society on the date of the affiliation agreement. In accordance with accounting principles generally accepted in the united states of america ("u.s. Gaap"), the library accounted for the affiliation agreement as though the library acquired the society, as of the affiliation date, and in doing so, the library recognized $15,819,686 in net assets on the date of the affiliation agreement at fair value.”
“The library has the right to elect all members of the board of trustees of the society.”
“The society's form 990 is prepared with the assistance of the auditors. Prior to the filing with the irs, the board of trustees reviews and approves the draft of the form.”
“The society has a conflict-of-interest policy which is signed annually by every member of the board of trustees and officers on an annual, and as needed basis. The audit committee shall review any real or potential related party transaction, and any matter that might constitute a conflict of interest by a related party, and shall submit to the board of trustees a recommendation whether to approve or ratify any such matter.”
“The director of the society and the cfo are employees of the library and underwent a periodic review by the library's compensation committee, where compensation was reviewed, compared to similar positions in like-size organizations and determined.”
“The organization's governing documents, conflict-of-interest policy and consolidated financial statements are available upon request. The consolidated financial statements and form 990 are also available on our website, when issued.”
“Dissolution of the society -14,988,707.”
“The organization's collections are not included in the consolidated statements of financial position. Items within the collections are catalogued, preserved, and cared for, and activities verifying their existence and assessing their condition are performed continuously. The organization maintains a policy whereby items purchased for the collections are recorded as expenses in the year in which the items are purchased. The organization reviews its collections on an ongoing basis and may periodically acquire or de-access collection items. Proceeds received from deaccessions are either used to acquire future collection items or held for the direct care, maintenance, or preservation of the collections.”
“The organization holds historic museum objects, fine arts, archival, photographic, and library collections. We use these collections in exhibits and educational programming; as well as preserve and make available collections for research use by the public.”
“The society is subject to the provisions of the financial accounting standards board's ("fasb") accounting standards codification ("asc") topic 740, "income taxes", relating to accounting and reporting for uncertainty in income taxes. Because of the society's general tax-exempt status, management believes asc topic 740 has not had, and is not anticipated to have, a material impact on the society's consolidated financial statements.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
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| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | MAKE THE VIBRANT HISTORY OF BROOKLYN TANGIBLE, RELEVANT AND MEANINGFUL FOR TODAY'S DIVERSE COMMUNITIES AND FOR GENERATIONS TO COME. |
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| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 692006 |
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| IRS990/CYOtherRevenueAmt | 0 | 9646 |
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| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 153488 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 153488 |
| IRS990/Desc | 0 | COLLECTIONS: BROOKLYN HISTORICAL SOCIETY HOUSES A WORLD-RENOWNED ARCHIVES AND SPECIAL COLLECTIONS LIBRARY ON THE SECOND FLOOR OF ITS LANDMARK BUILDING. THE OTHMER LIBRARY'S MAGNIFICENT READING ROOM, WITH ITS STAINED-GLASS WINDOWS AND CARVED WOODEN COLUMNS, TRANSPORTS THE VISITOR TO AN EARLIER ERA. BROOKLYN HISTORICAL SOCIETY IS THE ONLY CULTURAL INSTITUTION IN BROOKLYN THAT MAINTAINS A PERMANENT ORAL HISTORY PROGRAM. BEGUN IN 1973, BROOKLYN HISTORICAL SOCIETY'S ORAL HISTORY COLLECTIONS NOW INCLUDE OVER 1,200 INTERVIEWS. THROUGH AN INTEGRATED DESCRIPTION PROGRAM WITH THE LIBRARY & ARCHIVES, THESE ORAL HISTORIES BRING THE VOICES OF HISTORY TO BROAD AUDIENCES. THE COLLECTIONS PROVIDE A WEALTH OF HISTORICAL EVIDENCE ABOUT THE LIVES OF TWENTIETH AND TWENTY-FIRST-CENTURY BROOKLYN RESIDENTS AND REVEAL HOW DIVERSE INDIVIDUALS AND COMMUNITIES HAVE SOUGHT TO PRESERVE VITAL SOCIAL, POLITICAL, RELIGIOUS, AND CULTURAL TRADITIONS AS BROOKLYNITES, NEW YORKERS, AND AMERICANS. THE COLLECTIONS CONTAIN INTERVIEWS CONDUCTED IN ENGLISH, SPANISH, CANTONESE, AND MANDARIN, WITH NARRATORS BORN AS EARLY AS 1880. |
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| IRS990/DisregardedEntityInd | 0 | 0 |
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| IRS990/ExpenseAmt | 0 | 939470 |
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| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 5985 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 5985 |
| IRS990/FinalReturnInd | 0 | X |
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| IRS990/ForeignFinancialAccountInd | 0 | 0 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | SANDRA SCHUBERT - UNTIL 61323 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | HEATHER MALIN - UNTIL 61323 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | KAREN SHEEHAN - UNTIL 61323 |
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| IRS990/MissionDesc | 0 | HOUSED IN A MAGNIFICENT LANDMARK BUILDING IN BROOKLYN HEIGHTS DESIGNED BY GEORGE POST IN 1878 AND COMPLETED IN 1881, BROOKLYN HISTORICAL SOCIETY (BHS) MAINTAINS AN IMPORTANT COLLECTION OF ARCHIVAL DOCUMENTS, PHOTOGRAPHS, MAPS, BOOKS, ARTIFACTS AND PAINTINGS RELATING TO NATIONAL AND LOCAL HISTORY WE DRAW FROM THESE HOLDINGS TO CREATE INTERPRETIVE EXHIBITIONS THAT PROMPT VISITORS TO RECONSIDER THE FUNDAMENTAL FACTS OF HISTORY IN LIGHT OF PRIMARY SOURCE DOCUMENTS AND ARTIFACTS. |
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| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 12310 |
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| IRS990/OtherChangesInNetAssetsAmt | 0 | -14988707 |
| IRS990/OtherExpensesGrp/Desc | 0 | STORAGE AND MOVING EXPE |
| IRS990/OtherExpensesGrp/Desc | 1 | MISCELLANEOUS |
| IRS990/OtherExpensesGrp/Desc | 2 | FEES |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 26455 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 2380 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 44548 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 6205 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 44548 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 32660 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 2380 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 1158494 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | MISCELLANEOUS REVENUE |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 9646 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 9646 |
| IRS990/OtherRevenueTotalAmt | 0 | 9646 |
| IRS990/OthNotesLoansReceivableNetGrp/EOYAmt | 0 | 0 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PaymentsToAffiliatesGrp/ManagementAndGeneralAmt | 0 | 220000 |
| IRS990/PaymentsToAffiliatesGrp/TotalAmt | 0 | 220000 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 35750 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 0 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 27291 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 0 |
| IRS990/PrincipalOfficerNm | 0 | KAREN SHEEHAN |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 789774 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | -29920 |
| IRS990/PYOtherExpensesAmt | 0 | 1750238 |
| IRS990/PYOtherRevenueAmt | 0 | 8533 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -981851 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/PYTotalExpensesAmt | 0 | 1750238 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 768387 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvblFromDisqualifiedPrsnGrp/EOYAmt | 0 | 0 |
| IRS990/ReceivablesFromOfficersEtcGrp/EOYAmt | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 0 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 1 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 0 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 0 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 491134 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 0 |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 0 | REFUNDS AND OTHER MISCELLANEOUS INCOME - 2018 AMOUNT: $ 92,593. 2019 AMOUNT: $ 94,262. 2020 AMOUNT: $ 67,395. 2021 AMOUNT: $ 7,783. 2022 AMOUNT: $ 9,646. |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 0 | SCHEDULE A, PART II, LINE 10, EXPLANATION OF OTHER INCOME: |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 154287 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 789774 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 3366562 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 2844824 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 3942263 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 11097710 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 2589 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 1454 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 1167 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 405123 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 472070 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 882403 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearAmt | 0 | 9646 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 7783 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 67395 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 94262 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 92593 |
| IRS990ScheduleA/OtherIncome170Grp/TotalAmt | 0 | 271679 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.78240 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 0.81290 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 9585430 |
| IRS990ScheduleA/SubstantialContributorsTotAmt | 0 | 1512280 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 154287 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 789774 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 3366562 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 2844824 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 3942263 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 11097710 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 12251792 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | 1 |
| IRS990ScheduleD/CollectionUsedPreservationInd | 0 | X |
| IRS990ScheduleD/CollectionUsedPubExhibitionInd | 0 | X |
| IRS990ScheduleD/CollUsedLoanOrExchProgInd | 0 | X |
| IRS990ScheduleD/CollUsedScholarlyRsrchInd | 0 | X |
| IRS990ScheduleD/CYEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 122072 |
| IRS990ScheduleD/CYEndwmtFundGrp/GrantsOrScholarshipsAmt | 0 | 122072 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 122072 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 122072 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 122072 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 122072 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 1064346 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 122072 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/OtherExpendituresAmt | 0 | 942274 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 1064346 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 1064346 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 77544 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/OtherExpendituresAmt | 0 | 77544 |
| IRS990ScheduleD/EndowmentsHeldRelatedOrgInd | 0 | 0 |
| IRS990ScheduleD/EndowmentsHeldUnrelatedOrgInd | 0 | 0 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/SolicitedAssetsSaleInd | 0 | 0 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | THE ORGANIZATION'S COLLECTIONS ARE NOT INCLUDED IN THE CONSOLIDATED STATEMENTS OF FINANCIAL POSITION. ITEMS WITHIN THE COLLECTIONS ARE CATALOGUED, PRESERVED, AND CARED FOR, AND ACTIVITIES VERIFYING THEIR EXISTENCE AND ASSESSING THEIR CONDITION ARE PERFORMED CONTINUOUSLY. THE ORGANIZATION MAINTAINS A POLICY WHEREBY ITEMS PURCHASED FOR THE COLLECTIONS ARE RECORDED AS EXPENSES IN THE YEAR IN WHICH THE ITEMS ARE PURCHASED. THE ORGANIZATION REVIEWS ITS COLLECTIONS ON AN ONGOING BASIS AND MAY PERIODICALLY ACQUIRE OR DE-ACCESS COLLECTION ITEMS. PROCEEDS RECEIVED FROM DEACCESSIONS ARE EITHER USED TO ACQUIRE FUTURE COLLECTION ITEMS OR HELD FOR THE DIRECT CARE, MAINTENANCE, OR PRESERVATION OF THE COLLECTIONS. |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | THE ORGANIZATION HOLDS HISTORIC MUSEUM OBJECTS, FINE ARTS, ARCHIVAL, PHOTOGRAPHIC, AND LIBRARY COLLECTIONS. WE USE THESE COLLECTIONS IN EXHIBITS AND EDUCATIONAL PROGRAMMING; AS WELL AS PRESERVE AND MAKE AVAILABLE COLLECTIONS FOR RESEARCH USE BY THE PUBLIC. |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 2 | THE SOCIETY IS SUBJECT TO THE PROVISIONS OF THE FINANCIAL ACCOUNTING STANDARDS BOARD'S ("FASB") ACCOUNTING STANDARDS CODIFICATION ("ASC") TOPIC 740, "INCOME TAXES", RELATING TO ACCOUNTING AND REPORTING FOR UNCERTAINTY IN INCOME TAXES. BECAUSE OF THE SOCIETY'S GENERAL TAX-EXEMPT STATUS, MANAGEMENT BELIEVES ASC TOPIC 740 HAS NOT HAD, AND IS NOT ANTICIPATED TO HAVE, A MATERIAL IMPACT ON THE SOCIETY'S CONSOLIDATED FINANCIAL STATEMENTS. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART III, LINE 1A: |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | PART III, LINE 4: |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | PART X, LINE 2: |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 0 |
| IRS990ScheduleI/GrantRecordsMaintainedInd | 0 | 1 |
| IRS990ScheduleI/RecipientTable/CashGrantAmt | 0 | 692006 |
| IRS990ScheduleI/RecipientTable/IRCSectionDesc | 0 | 501(C)(3) |
| IRS990ScheduleI/RecipientTable/NonCashAssistanceAmt | 0 | 0 |
| IRS990ScheduleI/RecipientTable/PurposeOfGrantTxt | 0 | DISSOLUTIONON JUNE 13, 2023, THE BROOKLYN PUBLIC LIBRARY WAS FORMALLY MERGED WITH THE BROOKLYN HISTORICAL SOCIETY (THE "SOCIETY") UNDER THE CHARTER OF THE NEW YORK STATE BOARD OF REGENTS. BROOKLYN PUBLIC LIBRARY, THE SURVIVING ENTITY, WILL CONTINUE TO ADMINISTER THE PURPOSES OF THE MERGED ENTITIES. PRIOR TO THE MERGER, ON OCTOBER 1, 2020, THE LIBRARY ENTERED INTO AN AFFILIATION AGREEMENT WITH THE SOCIETY WHEREBY THE SOCIETY RE-ORGANIZED ITS CORPORATE STRUCTURE AS A MEMBERSHIP ORGANIZATION AND WHEREBY THE LIBRARY BECAME THE SOLE CORPORATE MEMBER OF THE SOCIETY ON THE DATE OF THE AFFILIATION AGREEMENT. IN ACCORDANCE WITH ACCOUNTING PRINCIPLES GENERALLY ACCEPTED IN THE UNITED STATES OF AMERICA ("U.S. GAAP"), THE LIBRARY ACCOUNTED FOR THE AFFILIATION AGREEMENT AS THOUGH THE LIBRARY ACQUIRED THE SOCIETY, AS OF THE AFFILIATION DATE, AND IN DOING SO, THE LIBRARY RECOGNIZED $15,819,686 IN NET ASSETS ON THE DATE OF THE AFFILIATION AGREEMENT AT FAIR VALUE. |
| IRS990ScheduleI/RecipientTable/RecipientBusinessName/BusinessNameLine1Txt | 0 | BROOKLYN PUBLIC LIBRARY |
| IRS990ScheduleI/RecipientTable/RecipientEIN | 0 | 111904261 |
| IRS990ScheduleI/RecipientTable/USAddress/AddressLine1Txt | 0 | 10 GRAND ARMY PLAZA |
| IRS990ScheduleI/RecipientTable/USAddress/CityNm | 0 | BROOKLYN |
| IRS990ScheduleI/RecipientTable/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990ScheduleI/RecipientTable/USAddress/ZIPCd | 0 | 11238 |
| IRS990ScheduleI/RecipientTable/ValuationMethodUsedDesc | 0 | FMV |
| IRS990ScheduleI/Total501c3OrgCnt | 0 | 1 |
| IRS990ScheduleJ/AnyNonFixedPaymentsInd | 0 | 1 |
| IRS990ScheduleJ/CompBasedOnRevenueOfFlngOrgInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdNetEarnsFlngOrgInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdNetEarnsRltdOrgsInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdOnRevRelatedOrgsInd | 0 | 0 |
| IRS990ScheduleJ/EquityBasedCompArrngmInd | 0 | 0 |
| IRS990ScheduleJ/InitialContractExceptionInd | 0 | 0 |
| IRS990/ScheduleJRequiredInd | 0 | 1 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 0 | 10000 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 0 | 261337 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 1 | 191562 |
| 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 | 36807 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 1 | 15474 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 0 | 28626 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 1 | 29348 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 0 | KAREN SHEEHAN - UNTIL 61323 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 1 | HEATHER MALIN - UNTIL 61323 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 0 | CFO |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 1 | DIRECTOR |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 1 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationRltdOrgsAmt | 0 | 336770 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationRltdOrgsAmt | 1 | 236384 |
| IRS990ScheduleJ/SeverancePaymentInd | 0 | 0 |
| IRS990ScheduleJ/SupplementalInformationDetail/ExplanationTxt | 0 | CERTAIN EMPLOYEES WERE AWARED NON-FIXED DISCRETIONARY BONUSES BASED ON MERIT. |
| IRS990ScheduleJ/SupplementalInformationDetail/ExplanationTxt | 1 | WITH REFERENCE TO THE AMOUNTS DISCLOSED IN COLUMN "E" FOR HEATHER MALIN AND KAREN SHEEHAN, 100% OF THE AMOUNTS REPORTED BY BROOKLYN HISTORICAL SOCIETY ARE PAID BY BROOKLYN PUBLIC LIBRARY. |
| IRS990ScheduleJ/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART I, LINE 7 |
| IRS990ScheduleJ/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | SCHEDULE J PART II |
| IRS990ScheduleJ/SupplementalNonqualRtrPlanInd | 0 | 0 |
| IRS990ScheduleN/AssetsDistributedInd | 0 | 1 |
| IRS990ScheduleN/AttorneyGeneralNotifiedInd | 0 | 1 |
| IRS990ScheduleN/BondsOutstandingInd | 0 | 0 |
| IRS990ScheduleN/DirectorOfSuccessorInd | 0 | 0 |
| IRS990ScheduleN/EmployeeOfSuccessorInd | 0 | 0 |
| IRS990ScheduleN/LiabilitiesPaidInd | 0 | 1 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/AssetsDistriOrExpnssPaidDesc | 0 | NET ASSETS |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/BusinessName/BusinessNameLine1Txt | 0 | BROOKLYN PUBLIC LIBRARY |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/DistributionDt | 0 | 2023-06-13 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/EIN | 0 | 111904261 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/FairMarketValueOfAssetAmt | 0 | 15680713 |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/IRCSectionTxt | 0 | 501(C)(3) |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/MethodOfFMVDeterminationTxt | 0 | FMV |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/AddressLine1Txt | 0 | 10 GRAND ARMY PLAZA |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/CityNm | 0 | BROOKLYN |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990ScheduleN/LiquidationOfAssetsTableGrp/LiquidationOfAssetsDetail/USAddress/ZIPCd | 0 | 11238 |
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