Investments In Unconsolidated Joint Ventures (South Pier At Harborside - Hotel) (Details) (Harborside South Pier [Member], USD $) In Millions, unless otherwise specified | 9 Months Ended |
|---|---|
Sep. 30, 2011 | |
Harborside South Pier [Member] | |
| Percentage of interest in venture | 50.00% |
| Mortgage loans, carrying amount | $ 65.4 |
| Interest rate | 6.15% |
| Mortgage loan maturity date | November 2016 |
| Bears interest at fixed rate range, minimum | 6.09% |
| Bears interest at fixed rate range, maximum | 6.62% |
| Letter of credit | 5.5 |
| Book value of company's long-term debt | $ 5.5 |
| Loan maturity date | Aug. 01, 2020 |