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Investments In Unconsolidated Joint Ventures (Red Bank Corporate Plaza, L.L.C.) (Narrative) (Details) (USD $)
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0 Months Ended | 3 Months Ended | 9 Months Ended | ||
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Jul. 15, 2013
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Sep. 30, 2013
Red Bank Corporate Plaza, L.L.C. [Member]
sqft
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Sep. 30, 2012
Red Bank Corporate Plaza, L.L.C. [Member]
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Sep. 30, 2013
Red Bank Corporate Plaza, L.L.C. [Member]
sqft
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Sep. 30, 2012
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 | 92,878 | |||
| Lease expiration date | Sep. 30, 2017 | ||||
| Percentage of interest in venture | 50.00% | 50.00% | |||
| Mortgage loans, carrying amount | $ 16,800,000 | $ 16,800,000 | |||
| Spread over LIBOR | 1.25% | 3.00% | |||
| Mortgage loan, maturity date | May 2016 | ||||
| LIBOR interest rate | 0.18% | 0.18% | |||
| Percentage of loan that has a fixed interest rate | 75.00% | 75.00% | |||
| Fixed interest rate | 3.99375% | 3.99375% | |||
| Management, leasing and other services fees | $ 26,000 | $ 25,000 | $ 80,000 | $ 75,000 | |