Preferred Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	May 01, 2023	Mar. 31, 2025	Dec. 31, 2024	Jan. 15, 2021
Class of Stock [Line Items]
Preferred Stock, par value		$ 0.001	$ 0.001	$ 0.001
Preferred Stock, shares authorized		200,000,000	200,000,000	200,000,000
Investor request amout after first anniversary of share issuance	$ 15.0
Preferred Stock, shares outstanding		0	0
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, par value	$ 1,000
Series B Preferred Stock [Member] | Maximum [Member]
Class of Stock [Line Items]
Preferred stock dividend rate if not redeemed, Percentage	11.00%
Series B Preferred Stock [Member] | Minimum [Member]
Class of Stock [Line Items]
Preferred stock dividend rate if not redeemed, Percentage	0.75%
Series B Convertible Preferred Units [Member]
Class of Stock [Line Items]
Preferred stock voting right description		In addition, the affirmative vote of the holders of a majority of the outstanding shares of Series B Convertible Preferred Stock is required in certain customary circumstances, as well as other circumstances, such as (i) our real estate portfolio exceeding a leverage ratio of 60% loan-to-value, (ii) entering into certain transactions with our Chief Executive Officer as of the date of the Purchase Agreement, or any entities in which such person has a controlling interest (excluding certain self-storage real estate programs sponsored by our sponsor or us), (iii) effecting a merger (or similar) transaction with an entity whose assets are not at least 80% self storage related, (iv) entering into any line of business other than self storage and ancillary businesses, unless such ancillary business represents revenues of less than 10% of the our revenues for our last fiscal year and (v) permitting any individual other than H. Michael Schwartz to (A) serve as our Chairman or any similar role or (B) otherwise perform any of the duties typically performed by Mr. Schwartz in his capacity as Chairman as of the date of the Series B Preferred Stock Purchase Agreement.
Convertible preferred stock distribution rate	8.35%
Convertible preferred stock distribution rate yearly increase	0.75%
Convertible preferred stock distribution rate maximum yearly increase rate until year ten	11.00%
Convertible preferred stock distribution rate yearly increase rate after year ten	0.75%
Series B Convertible Preferred Stock [Member]
Class of Stock [Line Items]
Gross proceeds from issuance of common stock (in shares)	150,000,000
Investment fee paid to investor percentage	0.50%
Preferred Stock, shares authorized	150,000
Dividend rate percentage	8.35%
Conversion value limitation premium	$ 40.0
Shares issued or outstanding if converted value limited equal to premium	150,000
Preferred Stock, Convertible, Conversion Price	$ 11
Loan to value leverage ratio	60
Preferred Stock, shares outstanding		150,000
Aggregate liquidation preference		$ 153.1
Aggregate liquidation preference from initial closing		150.0
Accumulated and unpaid distributions		$ 3.1