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Schedule III: Real estate and Accumulated depreciation (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | $ 1,164,544 |  |  |
Initial cost of Land | 21,593 |  |  |
Initial cost of Building and Leasehold improvements | 26,239 |  |  |
Costs capitalized subsequent to acquisition | 1,023,211 |  |  |
Carrying amount of Land | 44,971 |  |  |
Carrying amount of Buildings and Leasehold improvements | 1,014,311 |  |  |
Development and Construction in progress | 11,761 |  |  |
Total | 1,071,043 | $ 1,041,342 | $ 1,027,691 | $ 1,037,368
Accumulated Depreciation and Amortization | 350,122 | 324,499 | $ 297,421 | $ 283,044
Deferred debt issuance costs, net | 8,374 |  |  |
Differences between book and tax basis | 139,364 |  |  |
Other Properties |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 0 |  |  |
Initial cost of Land | 167 |  |  |
Initial cost of Building and Leasehold improvements | 1,804 |  |  |
Costs capitalized subsequent to acquisition | (1,804) |  |  |
Carrying amount of Land | 167 |  |  |
Carrying amount of Buildings and Leasehold improvements | 0 |  |  |
Development and Construction in progress | 0 |  |  |
Total | 167 |  |  |
Accumulated Depreciation and Amortization | $ 0 |  |  |
Date acquired | 1992 |  |  |
New York | Rego Park I |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | $ 0 |  |  |
Initial cost of Land | 1,647 |  |  |
Initial cost of Building and Leasehold improvements | 8,953 |  |  |
Costs capitalized subsequent to acquisition | 84,261 |  |  |
Carrying amount of Land | 1,647 |  |  |
Carrying amount of Buildings and Leasehold improvements | 86,721 |  |  |
Development and Construction in progress | 6,493 |  |  |
Total | 94,861 |  |  |
Accumulated Depreciation and Amortization | $ 38,451 |  |  |
Date of construction | 1959 |  |  |
Date acquired | 1992 |  |  |
New York | Rego Park I | Minimum |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Life on which Depreciation in Latest Income Statement is Computed | 3 years |  |  |
New York | Rego Park I | Maximum |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Life on which Depreciation in Latest Income Statement is Computed | 39 years |  |  |
New York | Rego Park II | Retail space |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | $ 202,544 |  |  |
Initial cost of Land | 3,127 |  |  |
Initial cost of Building and Leasehold improvements | 1,467 |  |  |
Costs capitalized subsequent to acquisition | 389,150 |  |  |
Carrying amount of Land | 3,127 |  |  |
Carrying amount of Buildings and Leasehold improvements | 390,114 |  |  |
Development and Construction in progress | 503 |  |  |
Total | 393,744 |  |  |
Accumulated Depreciation and Amortization | $ 113,318 |  |  |
Date of construction | 2009 |  |  |
Date acquired | 1992 |  |  |
New York | Rego Park II | Retail space | Minimum |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Life on which Depreciation in Latest Income Statement is Computed | 3 years |  |  |
New York | Rego Park II | Retail space | Maximum |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Life on which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
New York | The Alexander apartment tower |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | $ 94,000 |  |  |
Initial cost of Land | 0 |  |  |
Initial cost of Building and Leasehold improvements | 0 |  |  |
Costs capitalized subsequent to acquisition | 119,112 |  |  |
Carrying amount of Land | 0 |  |  |
Carrying amount of Buildings and Leasehold improvements | 119,112 |  |  |
Development and Construction in progress | 0 |  |  |
Total | 119,112 |  |  |
Accumulated Depreciation and Amortization | $ 21,028 |  |  |
Date of construction | 2016 |  |  |
Date acquired | 1992 |  |  |
New York | The Alexander apartment tower | Minimum |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Life on which Depreciation in Latest Income Statement is Computed | 3 years |  |  |
New York | The Alexander apartment tower | Maximum |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Life on which Depreciation in Latest Income Statement is Computed | 39 years |  |  |
New York | Rego Park III |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | $ 0 |  |  |
Initial cost of Land | 779 |  |  |
Initial cost of Building and Leasehold improvements | 0 |  |  |
Costs capitalized subsequent to acquisition | 5,292 |  |  |
Carrying amount of Land | 779 |  |  |
Carrying amount of Buildings and Leasehold improvements | 527 |  |  |
Development and Construction in progress | 4,765 |  |  |
Total | 6,071 |  |  |
Accumulated Depreciation and Amortization | $ 325 |  |  |
Date acquired | 1992 |  |  |
New York | Rego Park III | Minimum |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Life on which Depreciation in Latest Income Statement is Computed | 5 years |  |  |
New York | Rego Park III | Maximum |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Life on which Depreciation in Latest Income Statement is Computed | 15 years |  |  |
New York | Flushing |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | $ 0 |  |  |
Initial cost of Land | 0 |  |  |
Initial cost of Building and Leasehold improvements | 1,660 |  |  |
Costs capitalized subsequent to acquisition | (107) |  |  |
Carrying amount of Land | 0 |  |  |
Carrying amount of Buildings and Leasehold improvements | 1,553 |  |  |
Development and Construction in progress | 0 |  |  |
Total | 1,553 |  |  |
Accumulated Depreciation and Amortization | $ 1,146 |  |  |
Date of construction | 1975 |  |  |
Date acquired | 1992 |  |  |
New York | Lexington Avenue |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | $ 800,000 |  |  |
Initial cost of Land | 14,432 |  |  |
Initial cost of Building and Leasehold improvements | 12,355 |  |  |
Costs capitalized subsequent to acquisition | 416,994 |  |  |
Carrying amount of Land | 27,497 |  |  |
Carrying amount of Buildings and Leasehold improvements | 416,284 |  |  |
Development and Construction in progress | 0 |  |  |
Total | 443,781 |  |  |
Accumulated Depreciation and Amortization | $ 175,854 |  |  |
Date of construction | 2003 |  |  |
Date acquired | 1992 |  |  |
New York | Lexington Avenue | Minimum |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Life on which Depreciation in Latest Income Statement is Computed | 9 years |  |  |
New York | Lexington Avenue | Maximum |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Life on which Depreciation in Latest Income Statement is Computed | 39 years |  |  |
New Jersey | Paramus, NJ |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | $ 68,000 |  |  |
Initial cost of Land | 1,441 |  |  |
Initial cost of Building and Leasehold improvements | 0 |  |  |
Costs capitalized subsequent to acquisition | 10,313 |  |  |
Carrying amount of Land | 11,754 |  |  |
Carrying amount of Buildings and Leasehold improvements | 0 |  |  |
Development and Construction in progress | 0 |  |  |
Total | 11,754 |  |  |
Accumulated Depreciation and Amortization | $ 0 |  |  |
Date acquired | 1992 |  |  |
Participation Agreement | Rego Park II |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation |  |  |  |
Loan participation balance | $ 50,000 | $ 195,708 |  |

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