Note Payable and Revolving Line of Credit - Additional Information (Details) - USD ($)					3 Months Ended		6 Months Ended
	Jul. 08, 2024	Jul. 06, 2024	Jul. 06, 2021	Jun. 24, 2016	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Debt Instrument [Line Items]
Borrowing principal amount					$ 16,364,604		$ 16,364,604		$ 16,664,125
Loan procurement costs				$ 646,246	290,049		290,049		$ 307,543
Amortization expense							56,687	$ 68,918
Note payable, net book value					$ 22,900,000		$ 22,900,000
Debt instrument effective interest rate					7.30%		7.30%
Revolving Line of Credit
Debt Instrument [Line Items]
Amortization expense					$ 19,597	$ 24,500	$ 39,194	50,801
Line of credit, issuance costs		$ 235,164	$ 231,926
Unadvanced Amount of Second Amended Credit Facility Loan Agreement Greater than Fifty Percent \| Revolving Line of Credit
Debt Instrument [Line Items]
Annual unused facility fee percentage		0.25%
Unadvanced Amount of Second Amended Credit Facility Loan Agreement Less than or Equal to Fifty Percent \| Revolving Line of Credit
Debt Instrument [Line Items]
Annual unused facility fee percentage		0.15%
Second Amended Credit Facility \| Cap Rate Agreement
Debt Instrument [Line Items]
Effective Date	Jul. 10, 2024
Notional Amount	$ 7,500,000
Strike	5.25%
Maturity Date	Jul. 06, 2027
Second Amended Credit Facility \| Assets \| Cap Rate Agreement
Debt Instrument [Line Items]
Initial Premium	$ 57,000
Term Loan Promissory Note
Debt Instrument [Line Items]
Borrowing principal amount				$ 20,000,000
Debt instrument interest rate				4.192%
Debt instrument maturity date				Jul. 01, 2036
Amortization expense					$ 8,707	$ 9,020	$ 17,493	$ 18,117
Second Amended Credit Facility Promissory Note \| Revolving Line of Credit
Debt Instrument [Line Items]
Debt instrument maturity date		Jul. 06, 2027
Annual unused facility fee description							An annual unused facility fee is charged based on the daily average of the unadvanced amount of the Second Amended Credit Facility Loan Agreement during the trailing twelve month period ending each June 30. The fee will be calculated at 0.25% per annum if the daily average of the unadvanced amount of the Second Amended Credit Facility Loan Agreement during such trailing twelve month period was greater than fifty percent, and will be calculated at 0.15% if the daily average of the unadvanced amount of the Second Amended Credit Facility Loan Agreement during such trailing twelve month period was less than or equal to fifty percent.
Debt instrument initiative date		Jul. 06, 2024
Debt instrument interest rate		0.25%
Second Amended Credit Facility Promissory Note \| Revolving Line of Credit \| Maximum
Debt Instrument [Line Items]
Borrowing principal amount		$ 15,000,000
Second Amended Credit Facility Promissory Note \| Revolving Line of Credit \| Secured Overnight Financing Rate
Debt Instrument [Line Items]
Debt instrument interest rate		3.00%
Years 2 Amended Credit Facility Promissory Note \| Revolving Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity under the credit facility		$ 14,750,000
Years 3 Amended Credit Facility Promissory Note \| Revolving Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity under the credit facility		$ 14,500,000

Global Self Storage, Inc. 10-Q