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Investments In Unconsolidated Joint Ventures (Red Bank Corporate Plaza, L.L.C.) (Narrative) (Details) (Red Bank Corporate Plaza, L.L.C. [Member], USD $)
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3 Months Ended | |
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Mar. 31, 2014
sqft
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Mar. 31, 2013
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Red Bank Corporate Plaza, L.L.C. [Member]
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| Schedule of Equity Method Investments [Line Items] | ||
| Area of property (in square feet) | 92,878 | |
| Lease expiration date | Sep. 30, 2017 | |
| Percentage of interest in venture | 50.00% | |
| Mortgage loans, carrying amount | $ 16,400,000 | |
| Spread over LIBOR | 3.00% | |
| Mortgage loan, maturity date | May 2016 | |
| LIBOR interest rate | 0.15% | |
| Fixed interest rate | 3.99375% | |
| Notional amount | 13,650,000 | |
| Management, leasing and other services fees | $ 26,700 | $ 27,000 |