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Mortgages and Notes Payable (Tables) | 6 Months Ended
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Jun. 30, 2013
Debt Disclosure [Abstract] |
Schedule of Consolidated Mortgages and Notes Payable [Table Text Block] | The following table sets forth our mortgages and notes payable:
| June 30, 2013 |  | December 31, 2012
Secured indebtedness | $ | 544,510 |  |  | $ | 549,607 |
Unsecured indebtedness | 1,387,145 |  |  | 1,309,555 |
Total mortgages and notes payable | $ | 1,931,655 |  |  | $ | 1,859,162 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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