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Investments In and Advances To Unconsolidated Affiliates (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) property | Jun. 30, 2015 USD ($) | Jun. 30, 2016 USD ($) | Jun. 30, 2015 USD ($)
Income Statements: |  |  |  |  |
Rental and other revenues | $ 11,210 |  | $ 12,423 | $ 21,982 | $ 24,654
Expenses: |  |  |  |  |
Rental property and other expenses | 4,573 |  | 6,031 | 9,288 | 11,698
Depreciation and amortization | 2,656 |  | 3,110 | 5,403 | 6,225
Interest expense | 1,342 |  | 2,032 | 2,719 | 4,181
Total expenses | 8,571 |  | 11,173 | 17,410 | 22,104
Income before disposition of property | 2,639 |  | 1,250 | 4,572 | 2,550
Gains/(losses) on disposition of property | 0 |  | 16,054 | 902 | 18,181
Net income | $ 2,639 |  | $ 17,304 | $ 5,474 | $ 20,731
Percentage of equity interest in joint ventures, maximum (in hundredths) | 50.00% |  |  | 50.00% |
Concourse Center Associates, LLC Joint Venture [Member] |  |  |  |  |
Expenses: |  |  |  |  |
Gains/(losses) on disposition of property |  | $ (100) |  |  |
Percentage of equity interest in joint ventures, maximum (in hundredths) |  | 50.00% |  |  |
Number of buildings sold | property |  | 2 |  |  |
Proceeds received from disposition of property |  | $ 11,000 |  |  |
Our share of gains on disposition of property |  | 400 |  |  |
Repayment of debt |  | 6,600 |  |  |
4600 Madison Associates, LLC Joint Venture [Member] |  |  |  |  |
Expenses: |  |  |  |  |
Gains/(losses) on disposition of property |  | $ 1,000 |  |  |
Percentage of equity interest in joint ventures, maximum (in hundredths) |  | 12.50% |  |  |
Proceeds received from disposition of property |  | $ 3,400 |  |  |
Our share of gains on disposition of property |  | 100 |  |  |
Repayment of debt |  | $ 3,400 |  |  |
Fixed current interest rate (in hundredths) |  | 6.85% |  |  |

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