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Investment in Unconsolidated Ventures Investment in Unconsolidated Ventures (Tables) | 3 Months Ended
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Mar. 31, 2013
Equity Method Investments and Joint Ventures [Abstract] |
Equity Method Investment Summarized Financial Information [Table Text Block] | The following is a summary of the financial position of the Real Estate Ventures as of March 31, 2013 and December 31, 2012 (in thousands):
| March 31, 2013 |  | December 31, 2012
Net property | $ | 823,199 |  |  | $ | 923,536 |
Other assets | 168,077 |  |  | 174,677 |
Other liabilities | 31,209 |  |  | 53,645 |
Debt | 726,507 |  |  | 724,780 |
Equity | 233,560 |  |  | 319,788 |
Company’s share of equity (Company’s basis) (a) | 184,802 |  |  | 193,555 |
Summary of results of operations of unconsolidated Real Estate Venture [Table Text Block] | The following is a summary of results of operations of the Real Estate Ventures for the three-month periods ended March 31, 2013 and 2012 (in thousands):
| Three-month periods ended March 31,
| 2013 |  | 2012
Revenue | $ | 40,889 |  |  | $ | 38,593 |
Operating expenses | 18,266 |  |  | 16,815 |
Interest expense, net | 9,772 |  |  | 11,249 |
Depreciation and amortization | 12,906 |  |  | 11,471 |
Net loss | (55 | ) |  | (942 | )
Company’s share of income (Company’s basis) | 1,535 |  |  | 44 |

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