| Investments In Unconsolidated Joint Ventures (Marbella RoseGarden, L.L.C.) (Narrative) (Details) (USD $) | 3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
| Sep. 30, 2013
 PruRose/Marbella I, L.L.C. [Member] | Sep. 30, 2013
 PruRose/Marbella I, L.L.C. [Member] | Sep. 30, 2013
 Marbella RoseGarden, L.L.C. [Member] | Oct. 23, 2012
 Marbella RoseGarden, L.L.C. [Member]
 sqft
 item | Sep. 30, 2013
 Marbella RoseGarden, L.L.C. [Member]
 Prudential-Marbella Partnership [Member] | Oct. 23, 2012
 Marbella RoseGarden's Interest In PruRose/Marbella I [Member] | |
| Schedule of Equity Method Investments [Line Items] | ||||||
| Indirect residual ownership percentage | 24.27% | |||||
| Number of units | 412 | |||||
| Number of stories | 40 | |||||
| Area of property (in square feet) | 369,607 | |||||
| Percentage of interest in venture | 48.5325% | |||||
| Investment ownership percentage | 50.00% | |||||
| Percentage of operating return on capital | 9.50% | |||||
| Capital balance | $ 100,000 | $ 7,600,000 | ||||
| Accumulated unpaid operating return | 0 | |||||
| Mortgage loans, carrying amount | 95,000,000 | 95,000,000 | ||||
| Interest rate | 4.99% | 4.99% | ||||
| Mortgage loan, maturity date | May 2018 | |||||
| Management, leasing and other services fees | $ 83,000 | $ 262,000 | ||||
| Holding and distribution pattern under operating agreement | In general, the operating agreement of PruRose/Marbella provides that operating cash flows are distributed to members first to Prudential-Marbella and then to RoseGarden based on a 9.5 percent operating return on each members' capital balance in priorities as detailed in the operating agreement. Excess operating cash flows are distributed to the members in accordance with their ownership percentages. | 
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- Definition Accumulated Unpaid Operating Return No definition available. 
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- Definition Holding And Distribution Pattern Under Operating Agreement No definition available. 
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- Definition Indirect Residual Ownership Percentage No definition available. 
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- Definition Investment Ownership Percentage No definition available. 
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- Definition Management Leasing And Other Services Fees. No definition available. 
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- Definition Mortgage Loan Maturity Date No definition available. 
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- Definition Number Of Stories In Real Estate Property No definition available. 
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- Definition Percentage Of Operating Return On Capital No definition available. 
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- Definition Area of a real estate property. No definition available. 
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The carrying amount of the outstanding balance due under the mortgage loan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The number of units in a real estate property owned as of the balance sheet date. No definition available. 
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- Definition The amount of ownership interest of different classes of partners in limited partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
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