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Mortgages and Notes Payable (Tables) (Mortgages and Notes Payable [Member]) | 12 Months Ended
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Dec. 31, 2012
Mortgages and Notes Payable [Member] |
Debt Instrument [Line Items] |
Schedule of Maturities of Long-term Debt [Table Text Block] | Scheduled principal and balloon payments for mortgages and notes payable for the next five years and thereafter are as follows:
Year ending December 31, |  | Total
2013 |  | $ | 272,192 |
2014 |  | 283,460 |
2015 |  | 313,474 |
2016 |  | 167,312 |
2017 |  | 87,162 |
Thereafter |  | 292,361 |
|  | $ | 1,415,961 |

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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 470 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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