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v3.20.4

Information by Business Segment (NOI Reconciliation) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment financial information for real estate operations |  |  |
Interest and other income | $ 8,574 | $ 7,894 | $ 4,358
Credit loss recoveries | 933 | 0 | 0
Gain on sales of real estate | 30,209 | 105,230 | 2,340
Gain on sale of investment in unconsolidated real estate joint venture | 29,416 | 0 | 0
Equity in income of unconsolidated entities | 1,825 | 1,633 | 2,697
Income tax (expense) benefit | (353) | 217 | 363
Depreciation and other amortization associated with real estate operations | (138,193) | (137,069) | (137,116)
Impairment losses | (1,530) | (329) | (2,367)
General, administrative and leasing expenses | (33,001) | (35,402) | (28,900)
Business development expenses and land carry costs | (4,473) | (4,239) | (5,840)
Interest expense | (67,937) | (71,052) | (75,385)
UJV NOI allocable to COPT included in equity in income of unconsolidated entities | (6,951) | (5,705) | (4,818)
Loss on early extinguishment of debt | (7,306) | 0 | (258)
Loss on interest rate derivatives | (53,196) | 0 | 0
Net income | 102,878 | 200,004 | 78,643
Real estate operations |  |  |
Segment financial information for real estate operations |  |  |
NOI from real estate operations | 341,836 | 335,025 | 321,036
UJV NOI allocable to COPT included in equity in income of unconsolidated entities | $ (6,951) | $ (5,705) | $ (4,818)

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- Definition Costs incurred for business development, which involves the development of products and services, their delivery, design and their implementation. Business development includes a number of techniques designed to grow an economic enterprise. It includes the non capitalized cost of evaluating and executing acquisitions. It also includes expenses incurred in connection with properties not in operations. + References No definition available. + Details
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- Definition The current period expense charged against earnings on long-lived, physical real estate operations assets, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset or deferred costs associated with real estate operations over the benefit period of such asset or costs; or to reflect consumption during the period of an asset that is not used in production. + References No definition available. + Details
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