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Investments In Unconsolidated Joint Ventures (Route 93 Master LLC/Route 93 Bedford Master LLC) (Details) (USD $)
In Millions, unless otherwise specified
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0 Months Ended |
12 Months Ended |
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Sep. 01, 2009
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Mar. 31, 2009
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Dec. 31, 2011
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Jun. 01, 2006
sqft
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Commingled Pension Trust Fund [Member]
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| Schedule of Equity Method Investments [Line Items] |
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| Ownership percentage of third party venture |
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70.00% |
| Percentage of profit/loss distribution shared by partners |
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60.00% |
| Percentage of profit/loss distribution shared by partners after internal rate of return is reached |
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50.00% |
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Route 93 Participant [Member]
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| Schedule of Equity Method Investments [Line Items] |
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| Percentage of profit/loss distribution shared by partners |
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40.00% |
| Percentage of profit/loss distribution shared by partners after internal rate of return is reached |
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50.00% |
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Route 93 Master LLC [Member]
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| Schedule of Equity Method Investments [Line Items] |
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| Percentage of interest in venture |
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30.00% |
| Number of owned office properties |
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7 |
| Area of office property |
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666,697 |
| Impairment of property |
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$ 4.0 |
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| Impairment charges attributable to noncontrolling interest |
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0.6 |
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| Spread over LIBOR |
220 |
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| Mortgage loan, maturity date |
July 11, 2009 |
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| Holding and distribution pattern under operating agreement |
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Profits and losses were shared by the partners in proportion to their respective interests until the investment yielded an 11 percent IRR, then sharing shifted to 40/60, and when the IRR reached 15 percent, then sharing shifted to 50/50. The Route 93 Participant is a joint venture between the Company and a Gale affiliate. Profits and losses were shared by the partners under this venture in proportion to their respective interests (83.3/16.7) until the investment yielded an 11 percent IRR, then sharing shifted to 50/50. |
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Route 93 Participant/Commingled Pension Trust Fund [Member]
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| Schedule of Equity Method Investments [Line Items] |
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| Joint venture investment yield percentage |
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11.00% |
| Percentage of profit/loss distribution shared by partners after internal rate of return is reached |
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15.00% |
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Route 93 Master LLC/Route 93 Bedford Master LLC [Member]
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| Schedule of Equity Method Investments [Line Items] |
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| Percentage of profit/loss distribution shared by partners |
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83.30% |
| Joint venture investment yield percentage |
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11.00% |
| Percentage of profit/loss distribution shared by partners after internal rate of return is reached |
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50.00% |
| Mortgage loans, carrying amount |
44.2 |
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Gale Affiliate [Member]
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| Schedule of Equity Method Investments [Line Items] |
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| Percentage of profit/loss distribution shared by partners |
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16.70% |
| Percentage of profit/loss distribution shared by partners after internal rate of return is reached |
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50.00% |