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INVESTMENTS IN AND ADVANCES TO UNCONSOLIDATED AFFILIATES - Funds (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Apr. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) partner | Jun. 30, 2014 USD ($) | Dec. 31, 2014 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Investments in and advances to unconsolidated affiliates |  | $ 166,632 |  | $ 166,632 |  | $ 184,352
Gain on disposition of property of unconsolidated affiliates |  | 17,105 | $ 0 | $ 17,105 | $ 0 |
White City |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Net sales proceeds | $ 96,800 |  |  |  |  |
Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Number of unaffiliated partners | partner |  |  |  | 2 |  |
Gain on disposition of property of unconsolidated affiliates |  | 17,105 |  | $ 17,105 |  |
Fund III | White City |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Gain on disposition of property of unconsolidated affiliates | $ 17,300 |  |  |  |  |
Mervyns I and Mervyns II | Opportunity Funds | KLA/Mervyns LLC |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Distributions, equity method investment |  |  |  | 48,547 |  |
Equity Method Investments |  | 26,058 |  | 26,058 |  |
Mervyns I | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Distributions, equity method investment |  |  |  | 5,700 |  |
Mervyns II | Opportunity Funds | KLA A Markets LLC |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Distributions, equity method investment |  |  |  | 81,594 |  |
Equity Method Investments |  | $ 20,717 |  | $ 20,717 |  |
Corporate Joint Venture |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Gain on the disposition of property |  | 10.00% |  | 10.00% |  |
Corporate Joint Venture | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Distributions |  |  |  | $ 155,303 |  |
Investments in and advances to unconsolidated affiliates |  | $ 63,216 |  | 63,216 |  |
KLA/Mervyns LLC Add-On Investments | Mervyns I and Mervyns II | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Invested Capital and Advances, cost method investments |  | 7,547 |  | 7,547 |  |
Distributions |  |  |  | 9,272 |  |
KLAC Rex Venture LLC | Mervyns II | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Invested Capital and Advances, cost method investments |  | 2,701 |  | 2,701 |  |
Distributions |  |  |  | 4,727 |  |
KLA A Markets LLC Add-On Investments | Mervyns II | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Invested Capital and Advances, cost method investments |  | 2,416 |  | 2,416 |  |
Distributions |  |  |  | 4,864 |  |
KA-Shopko LLC | Fund II | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Invested Capital and Advances, cost method investments |  | 1,110 |  | 1,110 |  |
Distributions |  |  |  | 3,358 |  |
Marsh and Add-On Investments | Fund II | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Invested Capital and Advances, cost method investments |  | 2,667 |  | 2,667 |  |
Distributions |  |  |  | 2,941 |  |
Operating Partnership, as General Partner or Managing Member | Mervyns I and Mervyns II | Opportunity Funds | KLA/Mervyns LLC |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Distributions, equity method investment |  |  |  | 11,801 |  |
Equity Method Investments |  | 4,901 |  | 4,901 |  |
Operating Partnership, as General Partner or Managing Member | Mervyns II | Opportunity Funds | KLA A Markets LLC |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Distributions, equity method investment |  |  |  | 16,318 |  |
Equity Method Investments |  | 4,239 |  | 4,239 |  |
Operating Partnership, as General Partner or Managing Member | Corporate Joint Venture | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Distributions |  |  |  | 33,314 |  |
Investments in and advances to unconsolidated affiliates |  | 12,070 |  | 12,070 |  |
Operating Partnership, as General Partner or Managing Member | KLA/Mervyns LLC Add-On Investments | Mervyns I and Mervyns II | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Invested Capital and Advances, cost method investments |  | 1,252 |  | 1,252 |  |
Distributions |  |  |  | 2,017 |  |
Operating Partnership, as General Partner or Managing Member | KLAC Rex Venture LLC | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Distributions, equity method investment |  |  |  | 1,200 |  |
Operating Partnership, as General Partner or Managing Member | KLAC Rex Venture LLC | Mervyns II | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Invested Capital and Advances, cost method investments |  | 535 |  | 535 |  |
Distributions |  |  |  | 946 |  |
Operating Partnership, as General Partner or Managing Member | KLA A Markets LLC Add-On Investments | Mervyns II | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Invested Capital and Advances, cost method investments |  | 388 |  | 388 |  |
Distributions |  |  |  | 972 |  |
Operating Partnership, as General Partner or Managing Member | KA-Shopko LLC | Fund II | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Invested Capital and Advances, cost method investments |  | 222 |  | 222 |  |
Distributions |  |  |  | 672 |  |
Operating Partnership, as General Partner or Managing Member | Marsh and Add-On Investments | Fund II | Opportunity Funds |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Invested Capital and Advances, cost method investments |  | $ 533 |  | 533 |  |
Distributions |  |  |  | $ 588 |  |

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