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Investment in and Advances to Unconsolidated Affiliates (Details) (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010
Investments in Affiliates [Line Items] |  |  |  |
Percentage of equity interest in joint ventures, maximum | 50.00% |  | 50.00% |
Number of joint ventures with debt investment | 1 |  | 1 |
Income Statement [Abstract] |  |  |  |
Revenues | $ 25,623,000 | $ 26,517,000 | $ 75,619,000 | $ 93,819,000
Expenses: |  |  |  |
Rental property and other expenses | 10,805,000 | 12,664,000 | 33,576,000 | 45,463,000
Depreciation and amortization | 6,759,000 | 6,730,000 | 19,670,000 | 24,108,000
Interest expense | 5,976,000 | 6,094,000 | 17,841,000 | 21,892,000
Total expenses | 23,540,000 | 25,488,000 | 71,087,000 | 91,463,000
Net income | 2,083,000 | 1,029,000 | 4,532,000 | 2,356,000
Our share of: |  |  |  |
Depreciation and amortization of real estate assets | 2,066,000 | 2,115,000 | 6,192,000 | 8,193,000
Interest expense | 1,965,000 | 2,190,000 | 6,159,000 | 8,368,000
Net income | 442,000 | 432,000 | 2,112,000 | 952,000
Our share of net income | 442,000 | 432,000 | 2,112,000 | 952,000
Purchase accounting and management, leasing and other fees adjustments | 671,000 | 586,000 | 1,821,000 | 1,749,000
Equity in earnings of unconsolidated affiliates | 1,113,000 | 1,018,000 | 3,933,000 | 2,701,000
Gross proceeds received from disposition of investment in unconsolidated affiliate |  |  | 4,756,000 | 15,000,000
HIW Development B, LLC joint venture [Member] |  |  |  |
Our share of: |  |  |  |
Percentage of equity interest in joint venture (in hundredths) | 10.00% |  | 10.00% |
Gross proceeds received from disposition of investment in unconsolidated affiliate |  |  | 4,800,000 |
Gain recorded on disposition of investment in unconsolidated affiliate | $ 2,300,000 |  |  |

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