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ORGANIZATION AND BASIS OF PRESENTATION (Details) | 3 Months Ended
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Mar. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Line Items] |  |
Number of retail properties (in properties) | 104 |
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) | 73 |
Properties owned, percentage | 100.00% |
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) | 31 |
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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- Definition The number of units or percentage investment held by the managing member or general partner of the LLC or LP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Practice Bulletin (PB) -Number 14 -Paragraph 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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