Summary of Significant Accounting Policies - Additional Information (Detail)		3 Months Ended		6 Months Ended
	Jul. 10, 2019 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2021 USD ($) Property Segment	Jun. 30, 2020 USD ($) Property	Dec. 31, 2020 USD ($)
Summary of Significant Accounting Policies [Line Items]
Number of properties acquired | Property				0	0
Business acquisition, transaction costs				$ 0	$ 0
Days allowed for lease cancellation				30 days
Debt issuance costs				$ 1,490,080		$ 1,724,792
Offering cost as percentage of gross offering proceeds				1.00%
Maximum period for reimbursement of offering cost				60 days
Due to affiliates				$ 1,290,359	1,185,390
Gross proceeds from issuance of common stock					$ 3,313,677
Minimum percentage of ordinary taxable income to be distributed to stockholders				90.00%
Deferred tax asset, net operating loss				$ 3,200,000		2,400,000
Deferred tax liability, depreciation and other temporary book to tax differences				300,000		300,000
Deferred tax assets, net				$ 2,900,000		2,100,000
Number of reportable segments | Segment				2
Advisor [Member]
Summary of Significant Accounting Policies [Line Items]
Maximum period for reimbursement of offering expenses				60 days
Due to affiliates		$ 600,000
Class Y and Z Common Stock [Member]
Summary of Significant Accounting Policies [Line Items]
Offering cost as percentage of gross offering proceeds				1.00%
Minimum offering cost rate				1.00%
Maximum offering cost rate				1.00%
Gross proceeds from issuance of common stock			$ 11,900,000
Class Y Common Stock [Member] | Primary Offering [Member]
Summary of Significant Accounting Policies [Line Items]
Gross proceeds from issuance of common stock	$ 250,000,000
Class Y Common Stock [Member] | Select Capital Corporation (Dealer Manager) [Member]
Summary of Significant Accounting Policies [Line Items]
Sale commission fees percentage of proceed from Primary Offering	3.00%			3.00%
Dealer manager fees percentage of proceed from sales in primary portion of offering	3.00%			3.00%
In-Place Leases [Member]
Summary of Significant Accounting Policies [Line Items]
Gross amount of lease intangibles				$ 22,300,000		22,300,000
Accumulated amortization of lease intangibles				$ 22,300,000		$ 21,700,000
Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Initial term of lease				12 months
Maximum [Member] | Advisor [Member]
Summary of Significant Accounting Policies [Line Items]
Percentage of organization and offering expenses funded by our advisor				1.00%
Maximum [Member] | Furniture, Fixtures and Equipment [Member]
Summary of Significant Accounting Policies [Line Items]
Standard depreciable life				7 years
Minimum [Member] | Class Y and Z Common Stock [Member]
Summary of Significant Accounting Policies [Line Items]
Percentage of organization and offering expenses funded by our advisor				1.00%
Minimum [Member] | Class Y and Z Common Stock [Member] | Advisor [Member]
Summary of Significant Accounting Policies [Line Items]
Percentage of organization and offering expenses expected at termination of public offering		1.00%
Percentage of receivable from advisor for organization and offering expenses incurred		1.00%
Minimum [Member] | Furniture, Fixtures and Equipment [Member]
Summary of Significant Accounting Policies [Line Items]
Standard depreciable life				3 years
Reno Student Housing, DST [Member]
Summary of Significant Accounting Policies [Line Items]
Beneficial interest for ownership percentage				2.60%
Power 5 Conference Student Housing [Member]
Summary of Significant Accounting Policies [Line Items]
Beneficial interest for ownership percentage				1.40%