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ACQUISITION AND DISPOSITION OF REAL ESTATE AND PROPERTIES HELD FOR SALE - Acquisition (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 USD ($) ft² shares | Dec. 31, 2015 USD ($)
Core Portfolio |  |
Business Acquisition [Line Items] |  |
Gross leasable area (in square feet) | ft² | 129,822 |
Purchase Price | $ 116,269 |
Assumption of Debt | 10,472 |
Acquisition costs | $ 200 |
Fund IV |  |
Business Acquisition [Line Items] |  |
Gross leasable area (in square feet) | ft² | 19,528 |
Purchase Price | $ 13,750 |
Assumption of Debt | $ 1,463 |
Gotham Plaza | New York, NY | Core Portfolio |  |
Business Acquisition [Line Items] |  |
Gross leasable area (in square feet) | ft² | 122,902 |
Percentage of interests acquired | 49.00% |
Purchase Price | $ 39,808 |
Assumption of Debt | $ 10,472 |
991 Madison Avenue | New York, NY | Core Portfolio |  |
Business Acquisition [Line Items] |  |
Gross leasable area (in square feet) | ft² | 6,920 |
Percentage of interests acquired | 100.00% |
Purchase Price | $ 76,461 |
Assumption of Debt | $ 0 |
1964 Union Street | San Francisco, CA | Fund IV |  |
Business Acquisition [Line Items] |  |
Gross leasable area (in square feet) | ft² | 3,817 |
Percentage of interests acquired | 90.00% |
Purchase Price | $ 2,250 |
Assumption of Debt | $ 1,463 |
Restaurants at Fort Point | Boston, MA | Fund IV |  |
Business Acquisition [Line Items] |  |
Gross leasable area (in square feet) | ft² | 15,711 |
Percentage of interests acquired | 100.00% |
Purchase Price | $ 11,500 |
Assumption of Debt | $ 0 |
Acquisitions in 2015 |  |
Business Acquisition [Line Items] |  |
Gross leasable area (in square feet) | ft² | 149,350 |
Purchase Price | $ 130,019 |
Assumption of Debt | 11,935 |
Purchase Price Allocations |  |
Land | 67,017 | $ 65,759
Buildings and improvements | 192,472 | 204,532
Acquisition-related intangible assets (in Acquired lease intangibles, net) | 20,326 | 0
Acquisition-related intangible liabilities (in Acquired lease intangibles, net) | (8,809) | 0
Below market debt assumed (in Mortgage and other notes payable) | (10,480) | (9,765)
Total consideration | 260,526 | $ 260,526
Adjustments |  |
Land | 1,258 |
Buildings and improvements | (12,060) |
Acquisition-related intangible assets (in Acquired lease intangibles, net) | 20,326 |
Acquisition-related intangible liabilities (in Acquired lease intangibles, net) | (8,809) |
Below market debt assumed (in Mortgage and other notes payable) | (715) |
Total consideration | 0 |
Acquisitions in 2016 |  |
Purchase Price Allocations |  |
Land | 23,192 |
Buildings and improvements | 69,575 |
Debt assumed (included in Mortgage and other notes payable) | (21,371) |
Total consideration | $ 71,396 |
Operating Partnership, as General Partner or Managing Member |  |
Business Acquisition [Line Items] |  |
Limited partners' capital account, units issued (in shares) | shares | 442,478 |
Series C Preferred Stock | Operating Partnership, as General Partner or Managing Member |  |
Business Acquisition [Line Items] |  |
Limited partners' capital account, units issued (in shares) | shares | 141,593 |
Capital Lease Obligations | 991 Madison Avenue |  |
Business Acquisition [Line Items] |  |
Lease term | 49 years |
Capital lease payments | $ 7,200 |

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