COPT Defense Properties Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 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)

v2.4.1.9

Intangible Assets on Real Estate Acquisitions (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Intangible assets on real estate acquisitions
Gross Carrying Amount	$ 208,067,000		$ 188,467,000
Accumulated Amortization	146,590,000		144,613,000
Net Carrying Amount	61,477,000		43,854,000
Amortization of intangible assets	2,600,000us-gaap_AmortizationOfIntangibleAssets	3,600,000us-gaap_AmortizationOfIntangibleAssets
Weighted average useful life	10 years
Estimated future amortization expense associated with the intangible asset categories for the next five years
Remainder of fiscal year	9,400,000
2016	11,600,000
2017	9,400,000
2018	6,300,000
2019	5,100,000
2020	3,800,000
In-place lease value
Intangible assets on real estate acquisitions
Gross Carrying Amount	133,395,000		123,759,000
Accumulated Amortization	102,019,000		101,040,000
Net Carrying Amount	31,376,000		22,719,000
Weighted average useful life	6 years
Tenant relationship value
Intangible assets on real estate acquisitions
Gross Carrying Amount	49,552,000		42,301,000
Accumulated Amortization	29,265,000		28,492,000
Net Carrying Amount	20,287,000		13,809,000
Weighted average useful life	8 years
Below-market cost arrangements
Intangible assets on real estate acquisitions
Gross Carrying Amount	12,415,000		12,415,000
Accumulated Amortization	6,154,000		5,984,000
Net Carrying Amount	6,261,000		6,431,000
Weighted average useful life	31 years
Above-market leases
Intangible assets on real estate acquisitions
Gross Carrying Amount	11,372,000		8,659,000
Accumulated Amortization	8,211,000		8,159,000
Net Carrying Amount	3,161,000		500,000
Weighted average useful life	4 years
Market concentration premium
Intangible assets on real estate acquisitions
Gross Carrying Amount	1,333,000		1,333,000
Accumulated Amortization	941,000		938,000
Net Carrying Amount	$ 392,000		$ 395,000
Weighted average useful life	27 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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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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