Gladstone Commercial Corporation Quarterly report pursuant to Section 13 or 15(d)

Real Estate and Intangible Assets - Summary of Acquired Properties (Details) $ in Thousands				3 Months Ended
	Mar. 11, 2022 USD ($) ft² tenant	Feb. 24, 2021 USD ($) tenant	Jan. 22, 2021 USD ($) ft² tenant	Mar. 31, 2022 USD ($) ft² property	Mar. 31, 2021 USD ($) ft² property	Feb. 24, 2022 ft²
Business Acquisition [Line Items]
Number of properties acquired \| property				2	1
Aggregate Purchase Price				$ 13,463	$ 11,146
Wilkesboro, North Carolina
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²						80,000
Weighted Average Lease Term		12 years 8 months 12 days
Aggregate Purchase Price		$ 7,500
Number of tenants \| tenant		1
Oklahoma City, Oklahoma
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²	56,000
Weighted Average Lease Term	7 years
Aggregate Purchase Price	$ 6,000
Number of tenants \| tenant	1
Findlay, Ohio
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²			180,152
Weighted Average Lease Term			14 years 2 months 12 days
Aggregate Purchase Price			$ 11,100
Number of tenants \| tenant			1
Series of property acquisitions
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²				136,000	180,152
Weighted Average Lease Term				10 years 2 months 12 days	14 years 2 months 12 days
Aggregate Purchase Price				$ 13,463	$ 11,146
Aggregate Capitalized Acquisition Costs				$ 163	$ 146