Quarterly report pursuant to Section 13 or 15(d)

Information by Business Segment (Details 3)

v3.4.0.3
Information by Business Segment (Details 3) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Mar. 31, 2015
Reconciliation of segment assets to total assets      
Assets $ 3,937,908 $ 3,909,312 $ 3,771,651
Segment assets      
Reconciliation of segment assets to total assets      
Assets 3,305,392   3,110,380
Non-operating property assets      
Reconciliation of segment assets to total assets      
Assets 444,334   496,930
Other assets      
Reconciliation of segment assets to total assets      
Assets $ 188,182   $ 164,341