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ORGANIZATION AND BASIS OF PRESENTATION (Details) (USD $) In Millions, unless otherwise specified | 6 Months Ended
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Jun. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Line Items] |  |
Number of retail properties (in properties) | 108 |
Number of opportunity funds | 4 |
Fund I and Mervyns I |  |
Organization, Consolidation and Presentation of Financial Statements [Line Items] |  |
Ownership interest by general partner or managing partner | 37.78% | [1]
Core Portfolio |  |
Organization, Consolidation and Presentation of Financial Statements [Line Items] |  |
Number of retail properties (in properties) | 75 |
Properties owned, percentage | 100.00% |
Impairment of real estate | $ 1.5 |
Long-term debt, collateral | $ 23.1 |
Core Portfolio | Brandywine Portfolio |  |
Organization, Consolidation and Presentation of Financial Statements [Line Items] |  |
Equity method investment, ownership percentage | 22.22% |
Area of real estate property | 1,000,000 |
Opportunity Funds |  |
Organization, Consolidation and Presentation of Financial Statements [Line Items] |  |
Number of retail properties (in properties) | 33 |
Operating Partnership, as General Partner or Managing Member |  |
Organization, Consolidation and Presentation of Financial Statements [Line Items] |  |
Ownership interest by general partner or managing partner | 99.00% |
Remaining funds rate of distribution to partnership | 20.00% |
Institutional Investors [Member] |  |
Organization, Consolidation and Presentation of Financial Statements [Line Items] |  |
Remaining funds rate of distribution to all partners | 80.00% |
[1] | Fund I and Mervyns I have returned all capital and preferred return. The Operating Partnership is now entitled to a Promote on all future cash distributions.

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