Quarterly report pursuant to Section 13 or 15(d)

Information by Business Segment (Details 3)

v2.4.0.6
Information by Business Segment (Details 3) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Reconciliation of segment assets to total assets      
Assets $ 3,797,368 $ 3,867,524 $ 3,865,809
Operating Segment
     
Reconciliation of segment assets to total assets      
Assets 3,007,147   3,058,343
Non-operating property assets
     
Reconciliation of segment assets to total assets      
Assets 638,856   652,223
Other
     
Reconciliation of segment assets to total assets      
Assets $ 151,365   $ 155,243