Investments In Unconsolidated Joint Ventures (Red Bank Corporate Plaza) (Details) (Red Bank Corporate Plaza [Member], USD $) | 3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2011
sqft | Mar. 31, 2011 | Sep. 30, 2010 | Sep. 30, 2011
sqft | Sep. 30, 2010 | May 31, 2011 | |
Red Bank Corporate Plaza [Member] | ||||||
| Percentage of interest in venture | 50.00% | 50.00% | ||||
| Mortgage loans, carrying amount | $ 18,300,000 | $ 18,300,000 | $ 20,300,000 | |||
| Mortgage loan maturity date | May 2011 | May 17, 2016 | ||||
| Area of office property | 92,878 | 92,878 | ||||
| Spread over LIBOR | 125 | 300 | ||||
| LIBOR Interest Rate | 0.24% | 0.24% | ||||
| Mortgage repayment | 1,700,000 | |||||
| Percentage of loan principal swapped for fixed rate of interest | 75.00% | 75.00% | ||||
| Fixed interest rate | 3.99375% | 3.99375% | ||||
| Management, leasing and other services fees | $ 24,000 | $ 24,000 | $ 72,000 | $ 72,000 | ||