COPT Defense Properties Annual report [Section 13 and 15(d), not S-K Item 405]

Properties, Net - Allocation of Acquisition Costs (Details)

v3.25.4

Properties, Net - Allocation of Acquisition Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Acquisitions 2025
Asset Acquisition [Line Items]
Intangible assets on real estate acquisitions	$ 13,344
Total assets	33,644
Below-market leases	(767)
Total acquisition cost	$ 32,877
Acquisitions 2025 \| In-place lease value
Asset Acquisition [Line Items]
Weighted average amortization period	9 years 9 months 18 days
Acquisitions 2025 \| Land, operating properties
Asset Acquisition [Line Items]
Real estate	$ 10,943
Acquisitions 2025 \| Building and improvements
Asset Acquisition [Line Items]
Real estate	$ 9,357
Acquisitions 2024
Asset Acquisition [Line Items]
Intangible assets on real estate acquisitions		$ 7,248
Total acquisition cost		$ 32,244
Weighted average amortization period		7 years 7 months 6 days
Acquisitions 2024 \| In-place lease value
Asset Acquisition [Line Items]
Intangible assets on real estate acquisitions		$ 2,229
Weighted average amortization period		2 years 4 months 24 days
Acquisitions 2024 \| Land, operating properties
Asset Acquisition [Line Items]
Real estate		$ 8,361
Acquisitions 2024 \| Building and improvements
Asset Acquisition [Line Items]
Real estate		$ 16,635

- Definition

Other Real Estate, Additions Gross

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of consideration transferred in asset acquisition. Includes, but is not limited to, cash, liability incurred by acquirer, and equity interest issued by acquirer.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Additions of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure.

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