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Related Party Transactions (Details) ft² in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) ft² $ / ft² | Dec. 31, 2017 USD ($)
Leasing Agreements |  |
Receivable arising from the straight-lining of rents | $ 168,789 | $ 174,713
Rego Park II | Retail space | Toys R Us/ Babies R Us |  |
Leasing Agreements |  |
Area of property (in square feet) | ft² | 47 |
Annual revenue attributable to tenant | $ 2,600 |
Receivable arising from the straight-lining of rents | $ 500 |
Vornado |  |
Related Party Transaction |  |
Noncontrolling interest, ownership percentage by parent | 32.40% |
Management and Development Agreements |  |
Management fee agreement value | $ 2,800 |
Vornado | Toys R Us/ Babies R Us |  |
Related Party Transaction |  |
Noncontrolling interest, ownership percentage by parent | 32.50% |
Vornado | Property Management Fees | Rego Park II |  |
Management and Development Agreements |  |
Property management fee, percent fee | 2.00% |
Vornado | Property Management Fees | 731 Lexington Avenue |  |
Management and Development Agreements |  |
Property management fee agreement price per square foot | $ / ft² | 0.50 |
Vornado | Property Management Fees | 731 Lexington Avenue | Common Area |  |
Management and Development Agreements |  |
Property management fee agreement value | $ 315 |
Property management fee escalation percentage per annum | 3.00% |
Vornado | Development fees |  |
Management and Development Agreements |  |
Development fee as a percentage of development costs | 6.00% |
Leasing Agreements |  |
Amounts due | $ 146 | 21
Vornado | Leasing fees |  |
Leasing Agreements |  |
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 |
Percentage commissions on sale of assets over fifty million | 1.00% |
Amounts due | $ 13 | 1,811
Vornado | Management, property management, cleaning and security fees |  |
Leasing Agreements |  |
Amounts due | $ 549 | $ 658
Mr. Roth, Interstate, David Mandelbaum, and Russell B. Wight, Jr. |  |
Related Party Transaction |  |
Noncontrolling interest, ownership percentage by parent | 26.20% |
IP & Partners Through Vornado |  |
Related Party Transaction |  |
Noncontrolling interest, ownership percentage by parent | 2.30% |
Tenant Improvements | Toys R Us/ Babies R Us |  |
Leasing Agreements |  |
Depreciation and amortization | $ 588 |
Deferred Leasing Costs | Toys R Us/ Babies R Us |  |
Leasing Agreements |  |
Depreciation and amortization | $ 215 |

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