Gladstone Commercial Corporation Quarterly report [Sections 13 or 15(d)]

Subsequent Events - Schedule of Monthly Distributions Declared (Details) - Subsequent Event - $ / shares	1 Months Ended			3 Months Ended
	Sep. 30, 2026	Aug. 31, 2026	Jul. 31, 2026	Sep. 30, 2026
Dividends Payable [Line Items]
Distributions declared per common stock (in dollars per share)	$ 0.10	$ 0.10	$ 0.10	$ 0.30
Series E Preferred Stock
Dividends Payable [Line Items]
Distributions declared per preferred stock (in dollars per share)	0.138021	0.138021	0.138021	0.414063
Series G Preferred Stock
Dividends Payable [Line Items]
Distributions declared per preferred stock (in dollars per share)	0.125	0.125	0.125	0.375
Senior Common Stock
Dividends Payable [Line Items]
Distributions declared per common stock (in dollars per share)	0.125	0.125	0.125	0.375
Series F Preferred Stock
Dividends Payable [Line Items]
Distributions declared per preferred stock (in dollars per share)	$ 0.0875	$ 0.0875	$ 0.0875	$ 0.2625