Annual report pursuant to Section 13 and 15(d)

Information by Business Segment (Details 4)

v3.19.3.a.u2
Information by Business Segment (Details 4) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Reconciliation of segment assets to total assets    
Total COPT consolidated assets $ 3,854,453 $ 3,656,005
Operating properties lease liabilities included in segment assets 17,317  
Segment assets    
Reconciliation of segment assets to total assets    
Total COPT consolidated assets 3,024,958 3,084,862
Operating properties lease liabilities included in segment assets 17,317 0
Non-operating property assets    
Reconciliation of segment assets to total assets    
Total COPT consolidated assets 621,630 410,671
Other assets    
Reconciliation of segment assets to total assets    
Total COPT consolidated assets $ 190,548 $ 160,472