Gladstone Commercial Corporation Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

Mortgage Notes Payable, Credit Facility, and Senior Unsecured Notes - Schedule of Mortgage Notes Payable, Credit Facility, and Senior Unsecured Notes (Details)

Mortgage Notes Payable, Credit Facility, and Senior Unsecured Notes - Schedule of Mortgage Notes Payable, Credit Facility, and Senior Unsecured Notes (Details)	12 Months Ended
	Dec. 31, 2025 USD ($) mortgage property	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
Encumbered properties \| property	44
Long-term debt	$ 843,466,000	$ 693,385,000
Variable rate at period end	3.87%
Weighted average interest rate on debt outstanding (as a percent)	5.21%
Mortgage Notes Payable
Debt Instrument [Line Items]
Encumbered properties \| property	44
Carrying value	$ 251,578,000
Premiums and discounts, net	19,149	(8,000)
Deferred financing costs, net	(1,404,000)	(1,916,000)
Long-term debt	$ 250,193,000	269,579,000
Number of mortgage notes payable \| mortgage	38
Weighted average interest rate on debt outstanding (as a percent)	4.21%
Fixed rate mortgage loans
Debt Instrument [Line Items]
Encumbered properties \| property	44
Carrying value	$ 251,578,000	264,243,000
Stated interest rate (as a percent)	4.59%
Fixed rate mortgage loans \| Minimum
Debt Instrument [Line Items]
Stated interest rate (as a percent)	2.80%
Fixed rate mortgage loans \| Maximum
Debt Instrument [Line Items]
Stated interest rate (as a percent)	6.63%
Variable rate mortgage loans
Debt Instrument [Line Items]
Encumbered properties \| property	0
Carrying value	$ 0	7,260,000
Stated interest rate (as a percent)	2.25%
Variable rate revolving credit facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Encumbered properties \| property	0
Carrying value	$ 37,370,000	1,900,000
Long-term debt	$ 37,370,000	1,900,000
Stated interest variable rates (as a percent)	1.60%
Scheduled maturity dates	Oct. 10, 2029
Number of unencumbered properties \| property	106
Credit Facility
Debt Instrument [Line Items]
Deferred financing costs, net	$ (2,298,000)	(2,052,000)
Long-term debt	$ 397,702,000	347,948,000
Variable rate term loan facility A
Debt Instrument [Line Items]
Encumbered properties \| property	0
Carrying value	$ 125,000,000	160,000,000
Stated interest variable rates (as a percent)	1.55%
Scheduled maturity dates	Oct. 10, 2029
Variable rate term loan facility B
Debt Instrument [Line Items]
Encumbered properties \| property	0
Carrying value	$ 143,333,000	40,000,000
Stated interest variable rates (as a percent)	1.55%
Scheduled maturity dates	Feb. 15, 2030
Variable rate term loan facility C
Debt Instrument [Line Items]
Encumbered properties \| property	0
Carrying value	$ 131,667,000	150,000,000
Stated interest variable rates (as a percent)	1.55%
Scheduled maturity dates	Feb. 18, 2028
Senior unsecured notes 2029
Debt Instrument [Line Items]
Encumbered properties \| property	0
Carrying value	$ 75,000,000	75,000,000
Stated interest variable rates (as a percent)	6.47%
Senior unsecured notes 2030
Debt Instrument [Line Items]
Encumbered properties \| property	0
Carrying value	$ 85,000,000	0
Stated interest variable rates (as a percent)	5.99%
Senior Unsecured Notes
Debt Instrument [Line Items]
Deferred financing costs, net	$ (1,799,000)	(1,042,000)
Long-term debt	$ 158,201,000	$ 73,958,000