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v3.3.0.814

Relationship with Vornado (Details) - Vornado [Member] |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Dec. 22, 2014 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2015 USD ($) $ / ft² | Sep. 30, 2014 USD ($) | Dec. 31, 2014 USD ($)
Related Party Transaction [Line Items] |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  | 32.40% |  | 32.40% |  |
Management and Development Agreements |  |  |  |  |  |
Management Fee Agreement Value (in US dollars) |  |  |  | $ 2,800,000 |  |
Leasing Agreement [Abstract] |  |  |  |  |  |
Asset Sale Commission Threshold (in US dollars) |  |  |  | $ 50,000,000 |  |
Percentage Commissions On Sale Of Assets Under Fifty Million |  |  |  | 3.00% |  |
Percentage Commissions On Sale Of Assets Over Fifty Million |  |  |  | 1.00% |  |
Leasing services fee and commission on asset sale, annual installment, maximum. (in US dollars) | $ 4,000,000 |  |  |  |  |
Debt Instrument, Description of Variable Rate Basis | One-year LIBOR |  |  |  |  |
Basis spread over LIBOR | 1.00% |  |  |  |  |
Repayment of leasing costs (in US Dollars) | $ 40,353,000 |  |  |  |  |
Summary of fees to Vornado |  |  |  |  |  |
Fees to related party (in US dollars) |  | $ 2,076,000 | $ 4,337,000 | $ 7,316,000 | $ 8,561,000 |
Lexington Avenue Property [Member] |  |  |  |  |  |
Other Agreements [Abstract] |  |  |  |  |  |
Other Supervisory Fees |  |  |  | 6.00% |  |
Lexington Avenue Property [Member] | Office And Retail Space [Member] |  |  |  |  |  |
Management and Development Agreements |  |  |  |  |  |
Property Management Fee Agreement Price Per Square Foot | $ / ft² |  |  |  | 0.5 |  |
Lexington Avenue Property [Member] | Common Area [Member] |  |  |  |  |  |
Management and Development Agreements |  |  |  |  |  |
Property Management Fee Agreement Value (in US dollars) |  |  |  | $ 280,000 |  |
Property Management Fee Escalation Percentage Per Annum |  |  |  | 3.00% |  |
Rego Park I [Member] |  |  |  |  |  |
Other Agreements [Abstract] |  |  |  |  |  |
Security Services Fee |  |  |  | 6.00% |  |
Rego Park II [Member] |  |  |  |  |  |
Management and Development Agreements |  |  |  |  |  |
Property Management Fee Agreement Percentage Of Income |  |  |  | 2.00% |  |
Other Agreements [Abstract] |  |  |  |  |  |
Security Services Fee |  |  |  | 6.00% |  |
Company Management Fees [Member] |  |  |  |  |  |
Summary of fees to Vornado |  |  |  |  |  |
Fees to related party (in US dollars) |  | 700,000 | 700,000 | $ 2,100,000 | 2,100,000 |
Development fees [Member] |  |  |  |  |  |
Management and Development Agreements |  |  |  |  |  |
Development fee as percentage of development costs |  |  |  | 6.00% |  |
Summary of fees to Vornado |  |  |  |  |  |
Fees to related party (in US dollars) |  | 517,000 | 1,714,000 | $ 2,176,000 | 2,463,000 |
Fees owed to Vornado (in US dollars) |  | 5,540,000 |  | $ 5,540,000 |  | $ 3,394,000
Leasing Fees [Member] |  |  |  |  |  |
Leasing Agreement [Abstract] |  |  |  |  |  |
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% |  |
Summary of fees to Vornado |  |  |  |  |  |
Fees to related party (in US dollars) |  | 21,000 | 911,000 | $ 419,000 | 1,275,000 |
Fees owed to Vornado (in US dollars) |  | 15,000 |  | 15,000 |  |
Property Management Fees [Member] |  |  |  |  |  |
Summary of fees to Vornado |  |  |  |  |  |
Fees to related party (in US dollars) |  | 838,000 | $ 1,012,000 | 2,621,000 | $ 2,723,000 |
Fees owed to Vornado (in US dollars) |  | $ 411,000 |  | $ 411,000 |  | $ 528,000

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