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Commitments (Tables) | 12 Months Ended
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Dec. 31, 2011
Office buildings and industrial properties |
Commitments |
Schedule of future minimum lease payments |
(in thousands) |  | Year ending December 31, |
2012 |  | $ | 107,788 |
2013 |  | 105,032 |
2014 |  | 101,659 |
2015 |  | 86,968 |
2016 |  | 78,264 |
Thereafter (2017-2023) |  | 193,637 |
|  | $ | 673,348 |
Corporate office space |
Commitments |
Schedule of future minimum lease payments |
(in thousands) |  | Year ending December 31, |
2012 |  | $ | 355 |
2013 |  | 405 |
2014 |  | 417 |
2015 |  | 424 |
2016 |  | 428 |
Thereafter |  | 324 |
|  | $ | 2,353 |

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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 840 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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