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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) (USD $) | 12 Months Ended |  | 12 Months Ended |  |  |  | 12 Months Ended | 1 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Cash Flow Hedging [Member] Variable-Rate Derivatives [Member] Minimum [Member] | Dec. 31, 2013 Cash Flow Hedging [Member] Variable-Rate Derivatives [Member] Maximum [Member] | Dec. 31, 2013 Cash Flow Hedging [Member] Interest Rate Swap [Member] derivative_financial_instruments | Dec. 31, 2013 Cash Flow Hedging [Member] Interest Rate Swap [Member] Fixed-Rate Derivatives, Maturing between March 2015 and April 2023 [Member] | Dec. 31, 2013 Cash Flow Hedging [Member] Interest Rate Swap [Member] Fixed-Rate Derivatives, Maturing between March 2015 and April 2023 [Member] Minimum [Member] | Dec. 31, 2013 Cash Flow Hedging [Member] Interest Rate Swap [Member] Fixed-Rate Derivatives, Maturing between March 2015 and April 2023 [Member] Maximum [Member] | Dec. 31, 2013 Cash Flow Hedging [Member] Interest Rate Swap [Member] Variable-Rate Derivatives [Member] derivative_financial_instruments | Dec. 31, 2011 Fund I [Member] Granville Centre [Member] | Dec. 31, 2012 Mervyns I and Mervyns II [Member] | Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 1 [Member] | Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member] | Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member] Cash Flow Hedging [Member] Other Liabilities [Member] | Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member] Cash Flow Hedging [Member] Other Liabilities [Member] | Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member] Cash Flow Hedging [Member] Prepaid Expenses and Other Assets [Member] | Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 3 [Member] | Dec. 31, 2013 Walnut Hill Plaza [Member] Fund III [Member] | Dec. 31, 2013 Sheepshead Bay [Member] Fund III [Member] | Dec. 31, 2013 Sheepshead Bay [Member] Fund III [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative financial instruments, assets |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 3,114,000 |  |  | $ 3,000,000 | $ 0 |  |  |
Derivative financial instruments, liabilities |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 2,066,000 | 2,000,000 | 4,400,000 |  | 0 |  |  |
Asset Impairment Charges | 8,183,000 | 0 | 6,925,000 |  |  |  |  |  |  |  | 7,000,000 | 2,000,000 |  |  |  |  |  |  | 1,500,000 |  | 6,700,000
Sales Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,200,000 |
Derivative, Number of Instruments Held |  |  |  |  |  | 11 |  |  |  | 4 |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  |  |  | 179,700,000 |  |  | 140,700,000 |  |  |  |  |  |  |  |  |  |  |
Derivative, Fixed Interest Rate |  |  |  |  |  |  |  | 0.5225% | 3.77% |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Cap Interest Rate |  |  |  | 3.00% | 4.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated other comprehensive income - unrealized loss on valuation of swap agreements | 1,100,000 | 4,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | $ 2,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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