Summary of Significant Accounting Policies - Additional Information (Detail)		3 Months Ended		12 Months Ended
	Nov. 01, 2023 $ / shares	Mar. 31, 2024 USD ($) Contract Segment	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of contracts deemed to be in VIEs | Contract		0
Payments to acquire intangible assets		$ 0	$ 700,000
Property acquisitions		0
Asset acquisition, capitalized transaction related costs			2,500,000
Business acquisition, transaction costs		200,000	200,000
Impairment losses recognized		0	0
Advertising costs		$ 600,000	500,000
Estimated average rental period		18 months
Gross amounts of lease intangibles		$ 9,900,000		$ 10,000,000
Accumulated amortization of lease intangibles		7,900,000		6,900,000
Debt issuance cost expense		300,000	200,000
Total estimated future amortization expense of intangible assets, year 2024		2,000,000
Accumulated amortization of debt issuance costs		$ 1,100,000		800,000
Maximum period for reimbursement of offering cost		60 days
Maximum offering cost rate		15.00%
Preferred units and unpaid preferred distributions		$ 15,000,000
Minimum percentage of ordinary taxable income to be distributed to stockholders		90.00%
Allowance for doubtful accounts		$ 25,000		25,000
Uncertain tax positions		0		0
Income tax penalties and interest expense		$ 0			$ 0
Number of reportable segments | Segment		1
Assets		$ 554,300,666		560,916,606
Revenues		6,616,911	3,919,602
Current tax provision		2,900,000		2,900,000
Intangible assets net book value		$ 2,027,004		3,127,231
Weighted-average amortization period on remaining intangible assets		8 months 12 days
CA | Self Storage
Summary Of Significant Accounting Policies [Line Items]
Assets		$ 296,500,000		$ 304,800,000
Revenues		$ 3,500,000	900,000
Geographic Concentration Risk | Rental Income | AZ
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage		15.00%
Geographic Concentration Risk | Rental Income | FL
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage		12.00%
Geographic Concentration Risk | Rental Income | ONT
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage		50.00%
Distribution
Summary Of Significant Accounting Policies [Line Items]
Redemption total		$ 800,000	$ 0
Private Offering Dealer Manager Agreement
Summary Of Significant Accounting Policies [Line Items]
Maximum sale commission fees percentage of proceed from private offering		6.00%
Maximum dealer manager commission fees percentage of proceed from private offering		3.00%
Underwriting compensation		10.00%
Maximum percentage other non-accountable expenses		3.00%
Class W Common Stock
Summary Of Significant Accounting Policies [Line Items]
Percentage of offering cost without reimbursement		1.00%
Class W Common Stock | Dealer Manager
Summary Of Significant Accounting Policies [Line Items]
Maximum sale commission fees percentage of proceed from Primary Offering		1.50%
Percentage of gross proceeds from sale of shares		10.00%
Class W Common Stock | Private Offering Dealer Manager Agreement
Summary Of Significant Accounting Policies [Line Items]
Maximum sale commission fees percentage of proceed from Primary Offering		9.00%
Percentage of gross proceeds from sale of shares		10.00%
Class W Common Stock | Stockholder Servicing Fees
Summary Of Significant Accounting Policies [Line Items]
Servicing Fees Accrual Description		accrues daily in an amount equal to 1/365th of 0.5% of the purchase price per share
Monthly servicing fee accrual description		accrues daily in an amount equal to 1/365th of 0.5% of the purchase price per share
Class A Common Stock | Sponsor Funding Agreement
Summary Of Significant Accounting Policies [Line Items]
Net asset value per share | $ / shares	$ 10
Class A Common Stock | Dealer Manager
Summary Of Significant Accounting Policies [Line Items]
Maximum sale commission fees percentage of proceed from Primary Offering		6.00%
Maximum dealer manager commission fee percentage of proceeds from Primary Offering		3.00%
Percentage of gross proceeds from sale of shares		10.00%
Class A Common Stock | Private Offering Dealer Manager Agreement
Summary Of Significant Accounting Policies [Line Items]
Percentage of gross proceeds from sale of shares		10.00%
Class Z Common Stock
Summary Of Significant Accounting Policies [Line Items]
Price per share | $ / shares	9.3
Class Z Common Stock | Private Offering Dealer Manager Agreement
Summary Of Significant Accounting Policies [Line Items]
Maximum sale commission fees percentage of proceed from Primary Offering		9.00%
Percentage of gross proceeds from sale of shares		10.00%
Class Z Common Stock | Stockholder Servicing Fees
Summary Of Significant Accounting Policies [Line Items]
Servicing Fees Accrual Description		accrues daily in an amount equal to 1/365th of 0.5% of the purchase price per share
Monthly servicing fee accrual description		accrues daily in an amount equal to 1/365th of 0.5% of the purchase price per share
Class T Common Stock | Dealer Manager
Summary Of Significant Accounting Policies [Line Items]
Maximum sale commission fees percentage of proceed from Primary Offering		3.00%
Maximum dealer manager commission fee percentage of proceeds from Primary Offering		3.00%
Percentage of gross proceeds from sale of shares		10.00%
Class T Common Stock | Private Offering Dealer Manager Agreement
Summary Of Significant Accounting Policies [Line Items]
Percentage of gross proceeds from sale of shares		10.00%
Class T Common Stock | Stockholder Servicing Fees
Summary Of Significant Accounting Policies [Line Items]
Servicing Fees Accrual Description		accrues daily in an amount equal to 1/365th of 1% of the purchase price per share
Monthly servicing fee accrual description		accrues daily in an amount equal to 1/365th of 1% of the purchase price per share
Class Y Common Stock
Summary Of Significant Accounting Policies [Line Items]
Price per share | $ / shares	$ 9.3
Class Y Common Stock | Sponsor Funding Agreement
Summary Of Significant Accounting Policies [Line Items]
Percentage of upfront dealer manager fee	3.00%
Percentage of upfront sales commission	3.00%
Class Y Common Stock | Dealer Manager
Summary Of Significant Accounting Policies [Line Items]
Maximum sale commission fees percentage of proceed from Primary Offering		3.00%
Maximum dealer manager commission fee percentage of proceeds from Primary Offering		3.00%
Percentage of gross proceeds from sale of shares		10.00%
Class Y Common Stock | Private Offering Dealer Manager Agreement
Summary Of Significant Accounting Policies [Line Items]
Percentage of gross proceeds from sale of shares		10.00%
Class Y Common Stock | Stockholder Servicing Fees
Summary Of Significant Accounting Policies [Line Items]
Servicing Fees Accrual Description		accrues daily in an amount equal to 1/365th of 1% of the purchase price per share
Monthly servicing fee accrual description		accrues daily in an amount equal to 1/365th of 1% of the purchase price per share
Class Y Shares and Class Z Shares | Sponsor Funding Agreement
Summary Of Significant Accounting Policies [Line Items]
Price per share | $ / shares	$ 9.3
Percentage of organization and offering expenses	1.00%
Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life		3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life		5 years
Earliest Tax Year
Summary Of Significant Accounting Policies [Line Items]
Open tax year		2021
Latest Tax Year
Summary Of Significant Accounting Policies [Line Items]
Open tax year		2022