Annual report pursuant to Section 13 and 15(d)

Information by Business Segment (Details 2)

v3.19.3.a.u2
Information by Business Segment (Details 2) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Reconciliation of segment revenues to total revenues                      
Construction contract and other service revenues                 $ 113,763 $ 60,859 $ 102,840
Total revenues $ 157,785 $ 159,431 $ 175,070 $ 148,940 $ 138,482 $ 137,411 $ 146,743 $ 155,476 641,226 578,112 612,820
Reconciliation of Operatiing Income from Unconsolidated Joint Ventures to Equity Method Investments [Abstract]                      
UJV NOI allocable to COPT                 5,705 4,818 4,805
Less: Income from UJV allocable to COPT attributable to depreciation and amortization expense and interest expense                 (4,065) (3,314) (3,310)
Add: Equity in (loss) income of unconsolidated non-real estate entities                 (7) 1,193 (5)
Equity in income of unconsolidated entities                 1,633 2,697 1,490
Computation of net operating income from service operations                      
Construction contract and other service revenues                 113,763 60,859 102,840
Construction contract and other service expenses                 (109,962) (58,326) (99,618)
Real estate operations                      
Reconciliation of segment revenues to total revenues                      
Total revenues                 527,463 517,253 509,980
Reconciliation of Operatiing Income from Unconsolidated Joint Ventures to Equity Method Investments [Abstract]                      
UJV NOI allocable to COPT                 5,705 4,818 4,805
Service operations                      
Computation of net operating income from service operations                      
NOI from service operations                 $ 3,801 $ 2,533 $ 3,222