Quarterly report pursuant to Section 13 or 15(d)

Information by Business Segment (Details 4)

v3.19.1
Information by Business Segment (Details 4) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Mar. 31, 2018
Reconciliation of segment assets to total assets      
Total COPT consolidated assets $ 3,775,859 $ 3,656,005 $ 3,596,238
Operating properties lease liabilities included in segment assets 16,619    
Segment assets      
Reconciliation of segment assets to total assets      
Total COPT consolidated assets 3,108,153   3,025,966
Operating properties lease liabilities included in segment assets 16,342   0
Non-operating property assets      
Reconciliation of segment assets to total assets      
Total COPT consolidated assets 485,911   425,951
Other assets      
Reconciliation of segment assets to total assets      
Total COPT consolidated assets $ 165,453   $ 144,321