COPT Defense Properties Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Intangible Assets on Real Estate Acquisitions (Details)

v3.10.0.1

Intangible Assets on Real Estate Acquisitions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Intangible assets on real estate acquisitions
Gross Carrying Amount	$ 216,358	$ 222,683
Accumulated Amortization	172,888	163,591
Net Carrying Amount	43,470	59,092
Amortization of the intangible assets	$ 15,600	19,300	$ 20,000
Weighted average amortization period of intangible assets	12 years
Estimated future amortization expense associated with the intangible asset categories for the next five years
2019	$ 8,300
2020	5,500
2021	5,300
2022	3,800
2023	3,400
In-place lease value [Member]
Intangible assets on real estate acquisitions
Gross Carrying Amount	132,276	132,276
Accumulated Amortization	117,520	110,814
Net Carrying Amount	$ 14,756	21,462
Weighted average amortization period of intangible assets	7 years
Tenant relationship value [Member]
Intangible assets on real estate acquisitions
Gross Carrying Amount	$ 60,028	60,028
Accumulated Amortization	39,703	32,198
Net Carrying Amount	$ 20,325	27,830
Weighted average amortization period of intangible assets	9 years
Below-market cost arrangements [Member]
Intangible assets on real estate acquisitions
Gross Carrying Amount	$ 8,880	15,102
Accumulated Amortization	1,507	7,507
Net Carrying Amount	$ 7,373	7,595
Weighted average amortization period of intangible assets	33 years
Above-market leases [Member]
Intangible assets on real estate acquisitions
Gross Carrying Amount	$ 13,841	13,944
Accumulated Amortization	13,164	12,092
Net Carrying Amount	$ 677	1,852
Weighted average amortization period of intangible assets	6 years
Other [Member]
Intangible assets on real estate acquisitions
Gross Carrying Amount	$ 1,333	1,333
Accumulated Amortization	994	980
Net Carrying Amount	$ 339	$ 353
Weighted average amortization period of intangible assets	24 years

- Definition

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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