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

Annual report pursuant to Section 13 and 15(d)

Equity and Mezzanine Equity - Additional Information (Details)

Equity and Mezzanine Equity - Additional Information (Details) $ / shares in Units, $ in Thousands						1 Months Ended	12 Months Ended
	Sep. 20, 2022 USD ($) ft² shares	Aug. 05, 2021 shares	Jun. 30, 2021 USD ($) $ / shares shares	Jun. 28, 2021 USD ($) $ / shares shares	Jun. 23, 2021 shares	Feb. 29, 2020	Dec. 31, 2023 USD ($) shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($) shares	Mar. 03, 2023 USD ($)	Dec. 31, 2020 shares	Feb. 20, 2020 shares	Feb. 19, 2020 shares	Jan. 29, 2020 USD ($)	Dec. 03, 2019 USD ($)	Jan. 11, 2019 USD ($)
Class of Stock [Line Items]
Net proceeds from sale of shares \| $				$ 96,600
Repurchase of common stock, net \| $							$ 998
Temporary equity, contract terms, trigger change in control							50.00%
Sale of stock, price per share (in dollars per share) \| $ / shares				$ 25.00
Gross proceeds from sale of stock \| $				$ 100,000
Common stock, shares authorized (in shares)							62,326,818	62,305,727
Common stock, shares outstanding (in shares)							40,000,596	39,744,359				60,290,000	86,290,000
Aggregate Purchase Price \| $							$ 30,018	$ 115,364
Ownership by noncontrolling owners, shares outstanding (in shares)							310,643	391,468
Fort Payne, Alabama
Class of Stock [Line Items]
Aggregate Square Footage \| ft²	49,375
Aggregate Purchase Price \| $	$ 5,600						$ 5,600
Operating Partnership
Class of Stock [Line Items]
Company ownership percentage of voting securities							99.20%	99.00%
Units issued	134,474
Number of units redeemed in acquisition (in shares)							80,825
Series D Cumulative Redeemable Preferred Stock
Class of Stock [Line Items]
Minimum vote need to trigger change in control from tender offer							90.00%
Stock redeemed (in shares)			3,509,555
Preferred stock, redemption price per share (in usd per share) \| $ / shares			$ 25.1458333
Stock redeemed \| $			$ 88,300
Preferred stock adjustments \| $			$ 2,100
Series D Preferred Stock
Class of Stock [Line Items]
Stock redeemed \| $									$ 2,141
Series F Preferred Stock
Class of Stock [Line Items]
Stock redeemed \| $							$ (466)	$ (164)
Redeemable preferred stock, shares authorized (in shares)							25,972,296	25,992,787
Series G Preferred Stock
Class of Stock [Line Items]
Repurchase of common stock, net \| $							$ 3	$ 37
Redeemable preferred stock, shares authorized (in shares)					4,000,000
Common Stock and Non-controlling OP Units
Class of Stock [Line Items]
Stock redeemed (in shares)							80,825		246,039
Common stock, shares authorized (in shares)		62,290,000
Common stock, shares outstanding (in shares)							40,000,596	39,744,359	37,473,587		35,331,970
Preferred Stock \| Series D Cumulative Redeemable Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate		7.00%					7.00%
Preferred Stock \| Series E Cumulative Redeemable Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate							6.625%
Preferred Stock \| Series G Cumulative Redeemable Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate							6.00%
Preferred Stock \| Series D Preferred Stock
Class of Stock [Line Items]
Redeemable preferred stock, shares authorized (in shares)		2,490,445
Preferred Stock \| Series E Preferred Stock
Class of Stock [Line Items]
Redeemable preferred stock, shares authorized (in shares)		6,760,000
Preferred Stock \| Series F Preferred Stock
Class of Stock [Line Items]
Number of shares sold (in shares)							200,000
Net proceeds from sale of shares \| $							$ 5,600
Preferred stock, dividend rate					6.00%	6.00%
Redeemable preferred stock, shares authorized (in shares)		26,000,000										26,000,000
Preferred Stock \| Series G Preferred Stock
Class of Stock [Line Items]
Redeemable preferred stock, shares authorized (in shares)		4,000,000
Senior Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)		950,000
Common Stock ATM Program \| Common Stock and Non-controlling OP Units
Class of Stock [Line Items]
Repurchase of common stock, net \| $							$ 1,000
Public Stock Offering
Class of Stock [Line Items]
Number of shares sold (in shares)				4,000,000
2019 Registration Statement
Class of Stock [Line Items]
Universal registration statement, amount authorized \| $																$ 500,000
2020 Registration Statement
Class of Stock [Line Items]
Universal registration statement, amount authorized \| $														$ 800,000
2020 Registration Statement \| Preferred Stock \| Series F Preferred Stock
Class of Stock [Line Items]
Universal registration statement, amount authorized \| $														$ 636,500
Baird, Goldman Sachs, Stifel, and Fifth Third \| Common Stock ATM Program \| Common Stock and Non-controlling OP Units
Class of Stock [Line Items]
Maximum aggregate sales price of shares to be issued under open market sale agreement \| $										$ 250,000					$ 250,000
Number of shares sold (in shares)							200,000
Net proceeds from sale of shares \| $							$ 4,000
Baird, Goldman Sachs, Stifel, Fifth Third, and U.S. Bancorp Investments, Inc. \| Common Stock ATM Program \| Common Stock and Non-controlling OP Units
Class of Stock [Line Items]
Number of shares sold (in shares)							1,776
Net proceeds from sale of shares \| $							$ 20
Baird, Goldman Sachs, Stifel, Fifth Third, and U.S. Bancorp Investments, Inc. \| Series E Preferred Stock ATM Program
Class of Stock [Line Items]
Maximum aggregate sales price of shares to be issued under open market sale agreement \| $							$ 100,000