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ACQUISITION AND DISPOSITION OF REAL ESTATE AND PROPERTIES HELD FOR SALE - Dispositions & Properties Held For Sale (Details) ft² in Thousands, $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2016 USD ($) ft² property | Dec. 31, 2015 property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Gross leasable area (in square feet) | ft² | 82,098 |
Sale Price | $ 153,750 |
Gain on Sale | $ 81,965 |
Number of properties held for sale | property | 0 | 0
Fund III | Cortlandt Town Center |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Gross leasable area (in square feet) | ft² | 0 |
Disposal group, percentage | 65.00% |
Sale Price | $ 107,250 |
Gain on Sale | $ 65,393 |
Fund III | Heritage Shops |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Gross leasable area (in square feet) | ft² | 82,098 |
Sale Price | $ 46,500 |
Gain on Sale | $ 16,572 |

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