| Investments In Unconsolidated Joint Ventures (Red Bank Corporate Plaza, L.L.C.) (Narrative) (Details) (USD $) | 0 Months Ended | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|---|
| Jul. 15, 2013 | Sep. 30, 2013
 Red Bank Corporate Plaza, L.L.C. [Member]
 sqft | Sep. 30, 2012
 Red Bank Corporate Plaza, L.L.C. [Member] | Sep. 30, 2013
 Red Bank Corporate Plaza, L.L.C. [Member]
 sqft | Sep. 30, 2012
 Red Bank Corporate Plaza, L.L.C. [Member] | |
| 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 | |
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- Definition LIBOR Interest Rate 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 Percentage Of Loan That Has Fixed Interest Rate No definition available. 
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- Definition Area of a real estate property. No definition available. 
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. No definition available. 
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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 Date which lease or group of leases is set to expire, in CCYY-MM-DD format. No definition available. 
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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate. 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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- Details 
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