Annual report pursuant to Section 13 and 15(d)

Information by Business Segment (Reconciliation of Revenue) (Details)

v3.22.4
Information by Business Segment (Reconciliation of Revenue) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Reconciliation of segment revenues to total revenues      
Construction contract and other service revenues $ 154,632 $ 107,876 $ 70,640
Less: Revenues from discontinued operations (Note 4) (1,980) (30,490) (27,011)
Total revenues 739,030 664,446 582,354
Operating Expenses [Abstract]      
Less: Property operating expenses from discontinued operations (Note 4) (971) (16,842) (13,044)
Total property operating expenses 227,430 213,377 190,796
Reconciliation of UJV NOI allocable to COPT to Equity Income in Unconsolidated entities [Abstract]      
UJV NOI allocable to COPT 4,327 4,029 6,951
Less: Income from UJVs allocable to COPT attributable to depreciation and amortization expense, interest expense and gain on extinguishment of debt (3,145) (2,930) (5,120)
Add: Equity in income (loss) of unconsolidated non-real estate entities 561 (6) (6)
Equity in income of unconsolidated entities 1,743 1,093 1,825
Computation of net operating income from service operations      
Construction contract and other service revenues 154,632 107,876 70,640
Construction contract and other service expenses (149,963) (104,053) (67,615)
Real estate operations      
Reconciliation of segment revenues to total revenues      
Total revenues 586,378 587,060 538,725
Operating Expenses [Abstract]      
Property operating expenses 228,401 230,219 203,840
Less: Property operating expenses from discontinued operations (Note 4) (971) (16,842) (13,044)
Reconciliation of UJV NOI allocable to COPT to Equity Income in Unconsolidated entities [Abstract]      
UJV NOI allocable to COPT 4,327 4,029 6,951
Service operations      
Computation of net operating income from service operations      
NOI from service operations $ 4,669 $ 3,823 $ 3,025