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Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2011
Subsequent Event [Line Items]
Subsequent Events [Text Block]	12. Subsequent Events Pursuant to FASB ASC Topic 855, Subsequent Events, we have evaluated subsequent events and transactions that occurred after the September 30, 2011 unaudited consolidated balance sheet date for potential recognition or disclosure in our consolidated financial statements. On October 5, 2011, the Company sold the office building portion of the Paseo Del Sol operating property, for proceeds of approximately $4.8 million. On October 19, 2011, the Company assigned its 50%ownership interest in an investment in a real estate partnership to the other partner for proceeds of approximately $8.3 million. On October 28, 2011, the Company sold one operating property, Chapel Hill Centre, for proceeds of approximately $7.3 million.