Quarterly report pursuant to Section 13 or 15(d)

Properties, Net (Details)

v3.5.0.2
Properties, Net (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Investments in real estate    
Less: accumulated depreciation $ (678,827) $ (700,363)
Operating properties, net 2,782,330 2,920,529
Land    
Investments in real estate    
Gross 455,355 463,305
Buildings and improvements    
Investments in real estate    
Gross $ 3,005,802 $ 3,157,587