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v3.20.4

Related Party Transactions (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) $ / ft² | Dec. 31, 2019 USD ($)
Vornado |  |
Related Party Transaction |  |
Management fee agreement value | $ 2,800,000 |
Vornado | Property Management Fees | Rego Park II |  |
Related Party Transaction |  |
Property management fee, percent fee | 2.00% |
Vornado | Property Management Fees | 731 Lexington Avenue |  |
Related Party Transaction |  |
Property management fee agreement price per square foot | $ / ft² | 0.50 |
Vornado | Property Management Fees | 731 Lexington Avenue | Common Area |  |
Related Party Transaction |  |
Property management fee agreement value | $ 334,000 |
Property management fee escalation percentage per annum | 3.00% |
Vornado | Development fees |  |
Related Party Transaction |  |
Development fee as a percentage of development costs | 6.00% |
Amounts due | $ 557,000 | $ 68,000
Vornado | Leasing fees |  |
Related Party Transaction |  |
Lease fee percentage of rent one to ten years | 3.00% |
Lease fee percentage of rent eleven to twenty years | 2.00% |
Lease fee percentage of rent twenty first to thirty years | 1.00% |
Percentage increase lease fee if broker used | 1.00% |
Percentage commissions on sale of assets under fifty million | 3.00% |
Asset sale commission threshold | $ 50,000,000 |
Percentage commissions on sale of assets over fifty million | 1.00% |
Amounts due | $ 114,000 | 563,000
Vornado | Management, property management, cleaning and security fees |  |
Related Party Transaction |  |
Amounts due | $ 845,000 | $ 795,000
Mr. Roth, Interstate, David Mandelbaum and Russell B, Wight, Jr. | Mr. Roth, Interstate, David Mandelbaum, and Russell B. Wight, Jr. |  |
Related Party Transaction |  |
Ownership percentage by noncontrolling owners | 26.10% |
Alexander's Inc. | Vornado | Vornado |  |
Related Party Transaction |  |
Noncontrolling interest, ownership percentage by parent | 32.40% |
Alexander's Inc. | Vornado | IP & Partners Through Vornado |  |
Related Party Transaction |  |
Noncontrolling interest, ownership percentage by parent | 2.30% |

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