XML 31 R52.htm IDEA: XBRL DOCUMENT v3.3.0.814
Segment Information Segment Information Textual (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2015
USD ($)
property
segment
Jun. 22, 2015
Dec. 31, 2014
USD ($)
property
Segment Reporting Information [Line Items]      
Number of Reportable Segments | segment 7    
Other Liabilities | $ $ 41,630   $ 37,558
Coppell Associates [Member]      
Segment Reporting Information [Line Items]      
Other Liabilities | $ $ 1,100   $ 1,200
Durham, NC [Member]      
Segment Reporting Information [Line Items]      
Number of Properties 1    
Assets Held-for-sale [Member]      
Segment Reporting Information [Line Items]      
Number of Properties 6    
1000 Atrium Way and Libertyview [Member]      
Segment Reporting Information [Line Items]      
Number of Properties     2
Broadmoor Austin Associates [Member]      
Segment Reporting Information [Line Items]      
Percentage of ownership interests   50.00%