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Related Party Transactions - Additional Information (Detail) ft² in Thousands, $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2018 USD ($) ft² $ / ft² | Dec. 31, 2017 USD ($)
Related Party Transaction [Line Items] |  |
Receivable arising from the straight-lining of rents | $ 169,124 | $ 174,713
Toys R Us |  |
Related Party Transaction [Line Items] |  |
Receivable arising from the straight-lining of rents | $ 500 |
Rego Park II | Retail Space | Toys R Us |  |
Related Party Transaction [Line Items] |  |
Area of property | ft² | 47 |
Annual revenue from leased property | $ 2,600 |
Vornado |  |
Related Party Transaction [Line Items] |  |
Noncontrolling interest, ownership percentage by noncontrolling owners | 32.40% |
Management fee agreement value | $ 2,800 |
Vornado | Leasing fees |  |
Related Party Transaction [Line Items] |  |
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% |
Amount Due to / (Fees paid to) related party | $ 13 | 1,811
Vornado | Property management, cleaning, engineering and security fees | Rego Park II | Retail Space |  |
Related Party Transaction [Line Items] |  |
Property management fee agreement percentage of income | 2.00% |
Vornado | Property management, cleaning, engineering and security fees | 731 Lexington Avenue | Office and Retail Space |  |
Related Party Transaction [Line Items] |  |
Property management fee agreement price per square foot | $ / ft² | 0.50 |
Vornado | Property management, cleaning, engineering and security fees | 731 Lexington Avenue | Common Area |  |
Related Party Transaction [Line Items] |  |
Property management fee agreement value | $ 315 |
Property management fee escalation percentage per annum | 3.00% |
Vornado | Development fees |  |
Related Party Transaction [Line Items] |  |
Development fee as percentage of development costs | 6.00% |
Amount Due to / (Fees paid to) related party | $ 47 | 21
Vornado | Management, Property Management, Cleaning, Engineering and Security Fees |  |
Related Party Transaction [Line Items] |  |
Amount Due to / (Fees paid to) related party | 381 | $ 658
Tenant Improvements | Toys R Us |  |
Related Party Transaction [Line Items] |  |
Depreciation and amortization | 588 |
Deferred Leasing Costs | Toys R Us |  |
Related Party Transaction [Line Items] |  |
Depreciation and amortization | $ 215 |
Vornado | Vornado | Toys R Us |  |
Related Party Transaction [Line Items] |  |
Noncontrolling interest, ownership percentage by parent | 32.50% |

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