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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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12 Months Ended | ||
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Dec. 31, 2013
sqft
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Dec. 31, 2012
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Dec. 31, 2011
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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 | $ 16,600,000 | ||
| Spread over LIBOR | 3.00% | ||
| Mortgage loan, maturity date | May 2016 | ||
| LIBOR interest rate | 0.17% | ||
| Fixed interest rate | 3.99375% | ||
| Initial notional amount | 13,650,000 | ||
| Management, leasing and other services fees | $ 104,000 | $ 99,000 | $ 100,000 |