Liabilities / Assets
15th percentile
Higher debt load relative to assets than 15% of similar nonprofits.
EIN 13-1635307 • 501(c)3 • New York, NY
Profile
The new york society library was founded in 1754 by the new york society, a civic-minded group formed in the belief that the availability of books would help the city of new york to prosper.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
15th percentile
Higher debt load relative to assets than 15% of similar nonprofits.
Liabilities / Revenue
11th percentile
Higher debt load relative to revenue than 11% of similar nonprofits.
Net Margin
98th percentile
Higher net margin than 98% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
73rd percentile
Faster asset growth than 73% of similar nonprofits.
Revenue Growth
99th percentile
Faster revenue growth than 99% of similar nonprofits.
Assets
Up$62,744,093
Up $7,437,151 (+13%) from 2023
Liabilities
Up$1,248,807
Up $785,882 (+170%) from 2023
Net Assets
Up$61,495,286
Up $6,651,269 (+12%) from 2023
Revenue
Up$31,414,155
Up $27,823,665 (+775%) from 2023
Expenses
Up$4,021,049
Up $211,581 (+5.6%) from 2023
Net Income
Up$27,393,106
Up $27,612,084 (+12610%) from 2023
Most recent year
2024 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.
The new york society library was founded in 1754 by the new york society, a civic-minded group formed in the belief that the availability of books would help the city of new york to prosper.
The library was founded in 1754 by the new york society, (continued on schedule o)a civic-minded group formed in the belief that the availability of books would help the city of new york to prosper.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $51,648,014 | $56,368,918 | ▲ $4,720,904 |
| Land, Buildings, and Equipment, Net | $2,790,446 | $5,524,618 | ▲ $2,734,172 |
| Pledges and Grants Receivable | $118,307 | $448,793 | ▲ $330,486 |
| Cash and Non-Interest-Bearing Accounts | $578,032 | $231,298 | ▼ $346,734 |
| Prepaid Expenses and Deferred Charges | $137,086 | $162,093 | ▲ $25,007 |
| Savings and Temporary Cash Investments | $35,057 | $8,373 | ▼ $26,684 |
| Total Assets | $55,306,942 | $62,744,093 | ▲ $7,437,151 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $126,906 | $894,754 | ▲ $767,848 |
| Deferred Revenue | $336,019 | $354,053 | ▲ $18,034 |
| Total Liabilities | $462,925 | $1,248,807 | ▲ $785,882 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $51,789,607 | $56,050,863 | ▲ $4,261,256 |
| Net Assets With Donor Restrictions | $3,054,410 | $5,444,423 | ▲ $2,390,013 |
| Total Net Assets Fund Balance | $54,844,017 | $61,495,286 | ▲ $6,651,269 |
| Total Liabilities and Net Assets / Fund Balance | $55,306,942 | $62,744,093 | ▲ $7,437,151 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Buildings | $1,508,615 | $4,818,573 | $6,327,188 |
| Other Land Buildings | $3,863,347 | $754,298 | $4,617,645 |
| Equipment | $37,656 | $593,699 | $631,355 |
| Land | $115,000 | - | $115,000 |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2024 | $49,550,508 | - | ▲ $6,201,333 | $1,954,136 | $53,797,705 |
| 2023 | $41,146,061 | - | ▲ $10,301,349 | $1,896,902 | $49,550,508 |
| 2022 | $51,230,591 | - | ▼ $8,276,623 | $1,807,907 | $41,146,061 |
| 2021 | $44,188,454 | $275,000 | ▲ $8,481,249 | $1,714,112 | $51,230,591 |
| 2020 | $40,319,600 | $537,371 | ▲ $4,961,021 | $1,629,538 | $44,188,454 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Carolyn Waters | Head Librarian | FT | $148,132 | $27,407 | $175,539 |
| Sara E Holliday | Head of Events | FT | $114,052 | $34,450 | $148,502 |
| Christopher Henry | Building Superintendent | FT | $102,695 | $38,305 | $141,000 |
| Name | Title |
|---|---|
| George Lk Frelinghuysen | Chair |
| Ada Peluso | Board Member |
| Adrienne Ingrum | Board Member |
| Byron Bell | Board Member |
| Carol Collins Malone | Board Member |
| Charles G Berry | Board Member |
| Ellen M Iseman | Board Member |
| Elliot S Orol | Board Member |
| Emily Madison | Board Member |
| Francesca Stanfill | Board Member |
| Gretchen Rubin | Board Member |
| Jean Parker Phifer | Board Member |
| Jeannette Watson Sanger | Board Member |
| John Schwolsky | Board Member |
| Lisa W Hess | Board Member |
| Ralph S Brown Jr | Board Member |
| Robert a Caro | Board Member |
| Theodore C Rogers | Board Member |
| Warren St John | Board Member |
| William G Bardel | Board Member |
| Susan Robbins | Secretary |
| Timothy N Wallach | Treasurer |
| Contractor | Services | Location | Compensation |
|---|---|---|---|
| Sterling Project Development Group LLC | Consulting And Preconstruction | 111 GREAT NECK ROAD SUITE 408, Great Neck, NY 11021 | $213,450 |
| Larson Architecture Works | Architect | 501 5TH AVE, New York, NY 10017-7111 | $196,487 |
| Hirtle Callaghan & Co | Investment Manager | 300 BAR HARBOR DR, Conshohocken, PA 19428 | $192,439 |
| Backoffice Thinking | Software Developer | 1129 S HIGH STREET SUITE 209, West Chester, PA 19382 | $144,700 |
| Contribution Type | Contribution Count | Reported Amount | Valuation Method |
|---|---|---|---|
| Securities Publicly Traded | 13 | $831,029 | Fair Market Value |
| Total Noncash Contributions | 13 | $831,029 | - |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $2,424,266 |
| Other Expenses | $1,585,783 |
| Total Fundraising Expense | $369,354 |
| Grants and Similar Amounts Paid | $11,000 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $1,481,520 | $139,312 | $206,861 | $1,827,693 |
| Occupancy | $301,797 | $2,606 | $2,177 | $306,580 |
| Information Technology | $187,639 | $14,585 | $21,758 | $223,982 |
| Fees for Service Investment Mgmnt Fees | - | $222,962 | - | $222,962 |
| Other Employee Benefits | $174,860 | $16,764 | $25,008 | $216,632 |
| Depreciation Depletion | $173,976 | $1,502 | $1,255 | $176,733 |
| Current Officers, Directors, Trustees, and Key Employees | $135,165 | $15,799 | $24,575 | $175,539 |
| Payroll Taxes | $130,240 | $12,486 | $18,627 | $161,353 |
| Office Expenses | $65,921 | $3,325 | $4,960 | $74,206 |
| Insurance | $61,988 | $535 | $447 | $62,970 |
| Other Expenses | $6,481 | $40,299 | $927 | $47,707 |
| Pension Plan Contributions | $35,023 | $3,238 | $4,788 | $43,049 |
| Fees for Services Accounting | - | $29,694 | - | $29,694 |
| All Other Expenses | - | $23,288 | - | $23,288 |
| Fees for Services Other | - | $13,700 | - | $13,700 |
| Grants to Domestic Individuals | $11,000 | - | - | $11,000 |
| Fees for Services Legal | - | $7,854 | - | $7,854 |
| Total Functional Expenses | $3,103,746 | $547,949 | $369,354 | $4,021,049 |
| Line Item | Amount |
|---|---|
| Total Expenses per Form 990 | $4,021,049 |
| Expenses per Audited Statements | $3,798,087 |
| Total Expenses per Audited Statements | $3,798,087 |
| Expenses Not Reported on Financial Statements | $222,962 |
| Expenses Not Reported on Form 990 | $0 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“The library has shareholder/stockholder members as provided for under its original articles of incorporation dated 1754.”
“Shareholder/stockholder members elect the governing board of trustees.”
“Shareholder/stockholder member approval is required for changes to the library's governing documents.”
“Form 990 is prepared by the organization's independent accountants, and is reviewed by the head librarian, the controller, and the audit committee before it is filed.”
“Annually the organization's officers and trustees are required to disclose their interests that could give rise to a conflict of interest. Currently each member of the board of trustees signs the conflict of interest policy. If there is a possible conflict of interest, the chair of the board (and, if necessary, executive committee) is responsible for reviewing the situation and dealing with the individual.”
“Compensation for the organization's head librarian is determined by the board of trustees. The finance committee is responsible for approving the salary budget as part of the following year's operating budget. This budget is then reviewed and approved by the board of trustees of the library in december. The organization does not have any key employees or any other compensated officers.”
“The organization provides a summarized statement of revenue and expenses in its published annual report. Full audited financial statements are available at the organization. The organization's governing documents and conflict of interest policy are available to the public upon request.”
“The library does not capitalize its collections. Acquisition of books and binding costs are expensed as incurred. The proceeds of books replaced and sold are recognized as revenue.”
“The library has collections of over 12,000 non-circulating library materials, including a wide variety of rare and unique items: books, periodicals, newspapers, pamphlets and broadsides, maps, manuscripts, and a small collection of art, including portraits, furniture, sculpture, ceramics, glass, and decorative objects. Rare printed materials range from about one dozen incunables (books published during the first half-century of printing) to signed first editions of certain novels. Among the collection's strengths are new york city directories and 18th- and 19th-century travel narratives, the gothic novels found in the hammond collection, works on alchemy in the winthrop collection, writings on art and theater among the volumes in the sharaff-sze collection, and italian language books from mozart's librettist in the da ponte collection. The other named collections include: sharp collection, hammond collection, green art collection, and lyn chase poetry collection. The library also holds some manuscript materials: its own institutional archives (of which the first and second charging ledgers are part); correspondence, and other items, chiefly from the goodhue, bowne, and harrison families; as well as literary manuscripts and typescripts. These collections are maintained under curatorial care and are held for research, education and public exhibitions in furtherance of public service. The cost of rare books, occasionally purchased for the collections, is charged to expense when incurred.”
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 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 126906 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 894754 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | THE LIBRARY WAS FOUNDED IN 1754 BY THE NEW YORK SOCIETY, (CONTINUED ON SCHEDULE O)A CIVIC-MINDED GROUP FORMED IN THE BELIEF THAT THE AVAILABILITY OF BOOKS WOULD HELP THE CITY OF NEW YORK TO PROSPER. |
| IRS990/AllOtherContributionsAmt | 0 | 3403389 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 23288 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 23288 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | THE ORGANIZATION |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2122886900 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 53 EAST 79TH STREET |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | NEW YORK |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 10075 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 578032 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 231298 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 4 |
| IRS990/CollectionsOfArtInd | 0 | 1 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 24575 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 15799 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 135165 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 175539 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 213450 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 196487 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 2 | 192439 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 3 | 144700 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 111 GREAT NECK ROAD SUITE 408 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | 501 5TH AVE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 2 | 300 BAR HARBOR DR |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 3 | 1129 S HIGH STREET SUITE 209 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | GREAT NECK |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | NEW YORK |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 2 | CONSHOHOCKEN |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 3 | WEST CHESTER |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 1 | NY |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 2 | PA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 3 | PA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 11021 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 100177111 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 2 | 19428 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 3 | 19382 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | STERLING PROJECT DEVELOPMENT GROUP LLC |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 1 | LARSON ARCHITECTURE WORKS |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 2 | HIRTLE CALLAGHAN & CO |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 3 | BACKOFFICE THINKING |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | CONSULTING AND PRECONSTRUCTION |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | ARCHITECT |
| IRS990/ContractorCompensationGrp/ServicesDesc | 2 | INVESTMENT MANAGER |
| IRS990/ContractorCompensationGrp/ServicesDesc | 3 | SOFTWARE DEVELOPER |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 3403389 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 11000 |
| IRS990/CYInvestmentIncomeAmt | 0 | 27166132 |
| IRS990/CYOtherExpensesAmt | 0 | 1585783 |
| IRS990/CYOtherRevenueAmt | 0 | 39890 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 804744 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 27393106 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 2424266 |
| IRS990/CYTotalExpensesAmt | 0 | 4021049 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 369354 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 31414155 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 1 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 336019 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 354053 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 1255 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 1502 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 173976 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 176733 |
| IRS990/Desc | 0 | EVENTS AND EXHIBITIONSTHE LIBRARY IS OPEN TO THE PUBLIC FOR READING, REFERENCE,EXHIBITIONS, AND MANY EVENTS, WITH CIRCULATION AND OTHER SERVICES BYSUBSCRIPTION. AT END OF 2024, THE LIBRARY COUNTED 3,098 FAMILY, DUAL,INDIVIDUAL, E-MEMBERSHIP AND SCHOOL/INSTITUTIONAL MEMBERSHIPS. THELIBRARY HOUSES A COLLECTION OF OVER 300,000 VOLUMES, AND CIRCULATEDAPPROXIMATELY 55,000 TITLES TO MEMBERS IN 2024 AND LENT OUT 513 BOOKS TO 282 LIBRARIES IN 47 STATES THROUGH ITS INTERLIBRARY LOAN SERVICE.CONTINUE ON SCHEDULE OTHE LIBRARY OFFERS A DIVERSE CALENDAR OF EVENTS FOR READERS,WRITERS, AND CHILDREN, WITH MOST EVENTS OPEN TO BOTH MEMBERS AND NONMEMBERS.THE LIBRARY OFFERED OVER 276 PROGRAMS IN 2024, WITH PROGRAMMING HELDIN-PERSON, VIRTUALLY, AND HYBRID, WITH AN AUDIENCE IN THE THOUSANDS.THE ASSUNTA, IGNAZIO, ADA, AND ROMANO PELUSO EXHIBITION GALLERY, OPENTO THE PUBLIC, SHOWCASES RARE BOOKS AND MATERIALS ON LITERARY ANDHISTORICAL THEMES. IN 2024, THE LIBRARY OPENED ITS 270TH ANNIVERSARYEXHIBITION, TITLED A BELIEF IN BOOKS. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 3054410 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 5444423 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 1 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 34 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 3103746 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 29694 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 29694 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 7854 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 7854 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 13700 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 13700 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 222962 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 222962 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 21 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 22 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 23 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 24 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | X |
| 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/IndividualTrusteeOrDirectorInd | 13 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 14 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 15 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 16 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 17 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 18 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 19 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 20 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 21 | 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 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| 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 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 22 | 7407 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 23 | 34450 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 24 | 38305 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | GEORGE LK FRELINGHUYSEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | TIMOTHY N WALLACH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | SUSAN ROBBINS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | ADRIENNE INGRUM |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | RALPH S BROWN JR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | ADA PELUSO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | BYRON BELL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | CAROL COLLINS MALONE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | CHARLES G BERRY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | ELLEN M ISEMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | ELLIOT S OROL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | EMILY MADISON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | FRANCESCA STANFILL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | GRETCHEN RUBIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | JEAN PARKER PHIFER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | JEANNETTE WATSON SANGER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | JOHN SCHWOLSKY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | LISA W HESS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | ROBERT A CARO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | THEODORE C ROGERS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | WARREN ST JOHN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 21 | WILLIAM G BARDEL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 22 | CAROLYN WATERS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 23 | SARA E HOLLIDAY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 24 | CHRISTOPHER HENRY |
| 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/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 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 22 | 168132 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 23 | 114052 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 24 | 102695 |
| 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/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 22 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 23 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 24 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 21 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 22 | HEAD LIBRARIAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 23 | HEAD OF EVENTS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 24 | BUILDING SUPERINTENDENT |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 0 |
| IRS990/FormationYr | 0 | 1754 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 21622643 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 19 |
| IRS990/GrantAmt | 0 | 11000 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 11000 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 11000 |
| IRS990/GrantsToIndividualsInd | 0 | 1 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 65811138 |
| IRS990/GrossReceiptsAmt | 0 | 75602650 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 19 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 3 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 21758 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 14585 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 187639 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 223982 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 447 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 535 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 61988 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 62970 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 5543489 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 5543489 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 51648014 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 56368918 |
| IRS990/IRPDocumentCnt | 0 | 47 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 6166570 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 2790446 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 5524618 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 11691188 |
| IRS990/LegalDomicileStateCd | 0 | NY |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 44188495 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 1 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | THE NEW YORK SOCIETY LIBRARY WAS FOUNDED IN 1754 BY THE NEW YORK SOCIETY, A CIVIC-MINDED GROUP FORMED IN THE BELIEF THAT THE AVAILABILITY OF BOOKS WOULD HELP THE CITY OF NEW YORK TO PROSPER. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 54844017 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 61495286 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 21622643 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 21622643 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | -20741837 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 51789607 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 56050863 |
| IRS990/NoncashContributionsAmt | 0 | 831029 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 2177 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 2606 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 301797 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 306580 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 4960 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 3325 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 65921 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 74206 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 25008 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 16764 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 174860 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 216632 |
| IRS990/OtherExpensesGrp/Desc | 0 | LIBRARY MATERIALS |
| IRS990/OtherExpensesGrp/Desc | 1 | EXHIBITIONS AND EVENTS |
| IRS990/OtherExpensesGrp/Desc | 2 | DEVELOPMENT EVENTS |
| IRS990/OtherExpensesGrp/Desc | 3 | OTHER EXPENSES |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 57971 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 927 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 40299 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 180551 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 157585 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 6481 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 180551 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 157585 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 57971 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 47707 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | MISCELLANEOUS INCOME |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 18642 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 18642 |
| IRS990/OtherRevenueTotalAmt | 0 | 18642 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 206861 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 139312 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 1481520 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 1827693 |
| IRS990/PartialLiquidationInd | 0 | 0 |
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