Related Party Transactions - Additional Information (Detail)		3 Months Ended	6 Months Ended
	Mar. 08, 2021	Jun. 30, 2022 Employee	Jun. 30, 2022 USD ($) Employee	Jun. 30, 2021 USD ($)
Related Party Transaction [Line Items]
Maximum period for reimbursement of offering cost			60 days
Maximum offering cost rate			15.00%
Number of employees | Employee		0	0
Storage Auction Program
Related Party Transaction [Line Items]
Auction fees			$ 1,200	$ 0
Ownership percentage		50.00%	50.00%
Tenant Programs
Related Party Transaction [Line Items]
Threshold percentage to purchase triggering member ownership interest in joint venture at fair market value	95.00%
Tenant Programs | TRS subsidiary
Related Party Transaction [Line Items]
Percentage of ownership interest in joint venture	0.10%
Percentage of net revenue generated from tenant insurance to be received under terms of joint venture agreement	0.10%
Class W Common Stock
Related Party Transaction [Line Items]
Percentage of offering cost without reimbursement			1.00%
Advisory Agreement
Related Party Transaction [Line Items]
Maximum period for reimbursement of offering cost			60 days
Maximum offering cost rate			15.00%
Number of employees | Employee		0	0
Gross proceeds from Public Offering, threshold percentage of expenses for reimbursement		15.00%	15.00%
Acquisition fees as percentage of contract purchase price			1.00%
Monthly asset management fee			0.0625%
Monthly asset management fee one twelfth of less than zero point seven five percentage of asset value payable		one-twelfth of 0.75%
Operating expenses reimbursement percentage of average investment in assets			2.00%
Percentage of competitive commission rate		50.00%
Operating expenses reimbursement percentage of net income			25.00%
Operating expenses exceed limitation			12 months
Maximum days for disclosure fact			60 days
Advisory Agreement | Maximum
Related Party Transaction [Line Items]
Percentage of contract sales price of each property sold			1.00%
Advisory Agreement | Class W Common Stock
Related Party Transaction [Line Items]
Percentage of offering cost without reimbursement			1.00%
Amended Property Management Agreement
Related Party Transaction [Line Items]
Percentage of fee of Property Manager			6.00%
Property management agreement termination description			The property management agreements have a three-year term and automatically renew for successive three year periods thereafter, unless we or our Property Manager provide prior written notice at least 90 days prior to the expiration of the term. After the end of the initial three year term, either party may terminate a property management agreement generally upon 60 days’ prior written notice. With respect to each new property we acquire for which we enter into a property management agreement with our Property Manager we also pay our Property Manager a one-time start-up fee in the amount of $3,750.
Term of property management agreement			3 years
Renewal term of property management agreement			3 years
Notice period for property management agreement by property manager			60 days
Period of prior written notice for termination of property management agreement			90 days
Property manager one-time start-up fees			$ 3,750
Amended Property Management Agreement | Minimum
Related Party Transaction [Line Items]
Property Manager receives fee for services			$ 3,000
Transfer Agent Agreement
Related Party Transaction [Line Items]
Term of property management agreement			3 years
Renewal term of property management agreement			1 year
Period of prior written notice for termination of property management agreement			90 days
Affiliate of Property Manager | Tenant Programs
Related Party Transaction [Line Items]
Percentage of ownership interest in joint venture	99.90%
Percentage of net revenue generated from tenant insurance to be received under terms of joint venture agreement	99.90%
Tenant insurance revenue			$ 145,000	$ 15,000