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

Quarterly report [Sections 13 or 15(d)]

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

Mortgage Notes Payable, Credit Facility, and Senior Unsecured Notes - Narrative (Details)				3 Months Ended
	Dec. 18, 2024 USD ($)	Sep. 27, 2022 USD ($)	Aug. 18, 2022 USD ($)	Mar. 31, 2025 USD ($) property mortgage	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)	Aug. 17, 2022 USD ($)
Debt Instrument [Line Items]
Number of properties collateralized in mortgage notes payable \| property				139
Payments of deferred financing costs				$ 11,000	$ 0
Estimated reclassification from AOCI to interest expenses				1,300,000
Carrying value				740,746,000		$ 693,385,000
Line of credit outstanding				51,300,000		1,900,000
Revolving Credit Facility
Debt Instrument [Line Items]
Repayments of debt	$ 55,000,000
Line of Credit
Debt Instrument [Line Items]
Line of credit outstanding				$ 401,300,000
Weighted average interest rate				5.72%
Letters of credit, outstanding				$ 2,100,000
Maximum additional amount that can be drawn under line of credit				$ 70,100,000
Letter of Credit
Debt Instrument [Line Items]
Weighted average interest rate				1.35%
Fixed rate mortgage loans
Debt Instrument [Line Items]
Number of properties collateralized in mortgage notes payable \| property				44
Payments of deferred financing costs				$ 10,000.00	$ 0
Mortgage Notes Payable
Debt Instrument [Line Items]
Number of mortgage notes payable \| mortgage				40
Number of properties collateralized in mortgage notes payable \| property				45
Net book value of collateralized mortgage properties				$ 428,800,000
Fair value of mortgage notes payable				255,900,000
Carrying value				267,326,000		269,579,000
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 125,000,000	$ 120,000,000	125,000,000			$ 100,000,000
Variable rate term loan facility A
Debt Instrument [Line Items]
Maximum borrowing capacity				160,000,000
Variable rate term loan facility B
Debt Instrument [Line Items]
Maximum borrowing capacity			60,000,000	60,000,000
Repayments of debt	20,000,000
Variable rate term loan facility C
Debt Instrument [Line Items]
Maximum borrowing capacity		150,000,000	$ 140,000,000	150,000,000
Debt instrument fees incurred		$ 4,200,000
Variable rate term loan facility C \| Minimum
Debt Instrument [Line Items]
Spread on debt		3.15%	1.25%
Variable rate term loan facility C \| Maximum
Debt Instrument [Line Items]
Spread on debt		3.75%	1.95%
Senior Notes \| Senior Notes, 2029
Debt Instrument [Line Items]
Face amount	$ 75,000,000			$ 75,000,000		$ 75,000,000