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Information by Business Segment - Reconciliation of UJV NOI Allocable to COPT Defense to Equity in Income (Loss) of Unconsolidated Entities (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment financial information for real estate operations |  |  |  |
UJV NOI allocable to COPT Defense | $ 1,864 | $ 1,844 | $ 5,623 | $ 5,319
Less: Income from UJV allocable to COPT Defense attributable to depreciation and amortization expense, interest expense and loss on early extinguishment of debt | (1,786) | (1,759) | (4,819) | (5,139)
Add: Equity in loss of unconsolidated non-real estate entities | 1,737 | 0 | 1,737 | 0
Equity in income of unconsolidated entities | 1,815 | 85 | 2,541 | 180
Reportable segments |  |  |  |
Segment financial information for real estate operations |  |  |  |
UJV NOI allocable to COPT Defense | $ 1,864 | $ 1,844 | $ 5,623 | $ 5,319

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