Gladstone Commercial Corporation 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
- Organization, Basis of Presentation and Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Real Estate and Intangible Assets - Carrying Value of Intangible Assets and Accumulated Amortization (Detail)

v3.19.3.a.u2

Real Estate and Intangible Assets - Carrying Value of Intangible Assets and Accumulated Amortization (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Below market leases, gross	$ (34,322)	$ (29,807)
Below market leases, accumulated amortization	15,000	12,502
Amortization of intangible assets	19,200	17,700	$ 15,900
Amortization related to below-market lease	2,500	2,000	1,500
Lease Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	226,525	204,020
Finite-lived intangible assets, accumulated amortization	(111,060)	(92,572)
In-place Leases
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	92,906	83,894
Finite-lived intangible assets, accumulated amortization	(48,468)	(40,445)
Leasing Costs
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	68,256	59,671
Finite-lived intangible assets, accumulated amortization	(33,705)	(28,092)
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	65,363	60,455
Finite-lived intangible assets, accumulated amortization	(28,887)	(24,035)
Above and Below Market Leases
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible liabilities, gross	(17,820)	(15,256)
Finite-lived intangible liabilities, accumulated amortization	4,995	3,521
Above Market Leases
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	16,502	14,551
Finite-lived intangible assets, accumulated amortization	(10,005)	(8,981)
Amortization related to above-market lease	$ 1,100
Amortization related to above-market lease		$ 1,100	$ 700

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Finite lived intangible assets (liabilities) accumulated amortization.

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Finite lived intangible assets (liabilities) gross.

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Operating Lease, Right-of-Use Asset, Amortization

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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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