Gladstone Commercial Corporation Annual report pursuant to Section 13 and 15(d)

Real Estate and Intangible Assets - Summary of Properties Acquired (Details)

Real Estate and Intangible Assets - Summary of Properties Acquired (Details) $ in Thousands															12 Months Ended
	Nov. 03, 2023 USD ($) ft² tenant	Oct. 12, 2023 USD ($) ft² tenant	Jul. 28, 2023 USD ($) ft² tenant	Jul. 10, 2023 USD ($) ft² tenant	Apr. 14, 2023 USD ($) ft² tenant	Dec. 21, 2022 USD ($) ft²	Oct. 26, 2022 USD ($) ft² tenant	Sep. 20, 2022 USD ($) ft² tenant	Sep. 16, 2022 USD ($) ft² tenant	Aug. 05, 2022 USD ($) ft² property tenant	May 12, 2022 USD ($) ft² property tenant	May 04, 2022 USD ($) ft² property	Mar. 11, 2022 USD ($) ft² tenant	Feb. 24, 2022 USD ($) ft² tenant	Dec. 31, 2023 USD ($) ft² property	Dec. 31, 2022 USD ($) ft² property
Business Acquisition [Line Items]
Number of properties acquired \| property															5	13
Aggregate Purchase Price															$ 30,018	$ 115,364
Riverdale, Illinois
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²					76,089
Weighted Average Lease Term					20 years
Aggregate Purchase Price					$ 5,400
Number of tenants \| tenant					1
Dallas-Fort Worth, Texas
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²			100,000	7,714
Weighted Average Lease Term			20 years	9 years 10 months 24 days
Aggregate Purchase Price			$ 9,200	$ 3,000
Number of tenants \| tenant			1	1
Allentown, Pennsylvania
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²		69,920
Weighted Average Lease Term		20 years 1 month 6 days
Aggregate Purchase Price		$ 7,900
Number of tenants \| tenant		1
Indianapolis, Indiana
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²	67,709
Weighted Average Lease Term	20 years 1 month 6 days
Aggregate Purchase Price	$ 4,600
Number of tenants \| tenant	1
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
Cleveland, Ohio And Fort Payne, Alabama
Business Acquisition [Line Items]
Number of properties acquired \| property												2
Aggregate Square Footage \| ft²												260,719
Aggregate Purchase Price												$ 19,500
Wilmington, North Carolina
Business Acquisition [Line Items]
Number of properties acquired \| property											3
Aggregate Square Footage \| ft²											345,584
Weighted Average Lease Term											13 years 1 month 6 days
Aggregate Purchase Price											$ 18,900
Number of tenants \| tenant											1
Bridgeton and Vineland, New Jersey
Business Acquisition [Line Items]
Number of properties acquired \| property										2
Aggregate Square Footage \| ft²										246,000
Weighted Average Lease Term										15 years 1 month 6 days
Aggregate Purchase Price										$ 32,700
Number of tenants \| tenant										1
Jacksonville, Florida
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²									67,328
Weighted Average Lease Term									20 years
Aggregate Purchase Price									$ 8,100
Number of tenants \| tenant									1
Fort Payne, Alabama
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²								49,375
Weighted Average Lease Term								14 years 9 months 18 days
Aggregate Purchase Price								$ 5,600							$ 5,600
Number of tenants \| tenant								1
Denver, Colorado
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²							68,674
Weighted Average Lease Term							20 years
Aggregate Purchase Price							$ 12,100
Number of tenants \| tenant							1
Greenville, South Carolina
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²						65,000
Weighted Average Lease Term						12 years
Aggregate Purchase Price						$ 5,000
Series of Property Acquisitions
Business Acquisition [Line Items]
Aggregate Square Footage \| ft²															321,432	1,238,680
Weighted Average Lease Term															19 years 3 months 18 days	14 years 6 months
Aggregate Purchase Price															$ 30,018	$ 115,364
Aggregate Capitalized Acquisition Costs															$ 528	$ 1,014