Summary of Significant Accounting Policies - Additional Information (Detail)				3 Months Ended	12 Months Ended
	Feb. 09, 2022 Asset	Jul. 10, 2019	Jun. 21, 2019 shares	Jun. 30, 2020 USD ($)	Dec. 31, 2021 USD ($) Segment Property shares	Dec. 31, 2020 USD ($) Property shares	Dec. 31, 2019 USD ($) shares
Summary of Significant Accounting Policies [Line Items]
Number of properties acquired | Property					0	0
Business acquisition, transaction costs					$ 0	$ 0
Impairment loss on long-lived assets					$ 0	0
Days allowed for lease cancellation					30 days
Allowance for doubtful accounts					$ 70,000.00	80,000.00
Advertising cost					900,000	700,000	$ 800,000
Other income related to stimulus grants					800,000	800,000
Debt issuance costs					$ 1,427,547	1,700,000
Offering cost as percentage of gross offering proceeds					1.00%
Maximum period for reimbursement of offering expenses					60 days
Due to affiliates					$ 2,637,266	1,904,913	$ 3,287,971
Common stock one-time distribution issued date			Jul. 10, 2019
Minimum percentage of ordinary taxable income to be distributed to stockholders					90.00%
Deferred tax asset, net operating loss					$ 3,900,000	2,400,000
Deferred tax liability, depreciation and other temporary book to tax differences					300,000	300,000
Deferred tax assets, net					3,600,000	2,100,000
Unrecognized tax benefits					0	0
Unrecognized tax benefits, interest or penalties					$ 0	$ 0
Number of reportable segments | Segment					2
Unvested Restricted Stock [Member]
Summary of Significant Accounting Policies [Line Items]
Unvested antidilutive shares | shares					7,500	8,125	8,125
Federal [Member]
Summary of Significant Accounting Policies [Line Items]
Net operating losses					$ 14,500,000
Open tax year					2018 2019 2020 2021
Federal [Member] | Earliest Tax Year [Member]
Summary of Significant Accounting Policies [Line Items]
Net operating losses expiration year					2037
Federal [Member] | Latest Tax Year [Member]
Summary of Significant Accounting Policies [Line Items]
Net operating losses expiration year					2041
State [Member]
Summary of Significant Accounting Policies [Line Items]
Net operating losses					$ 18,700,000
Open tax year					2018 2019 2020 2021
State [Member] | Earliest Tax Year [Member]
Summary of Significant Accounting Policies [Line Items]
Net operating losses expiration year					2033
State [Member] | Latest Tax Year [Member]
Summary of Significant Accounting Policies [Line Items]
Net operating losses expiration year					2036
Advisor [Member]
Summary of Significant Accounting Policies [Line Items]
Maximum period for reimbursement of offering expenses					60 days
Due to affiliates				$ (600,000)
Select Capital Corporation (Dealer Manager) [Member]
Summary of Significant Accounting Policies [Line Items]
Due to affiliates					$ 0
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%
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%
Class T Common Stock [Member]
Summary of Significant Accounting Policies [Line Items]
Common stock one-time distribution declared | shares			0.07527
Class T 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%
Class W Common Stock [Member]
Summary of Significant Accounting Policies [Line Items]
Common stock one-time distribution declared | shares			0.01075
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
ASU 2016-13 [Member]
Summary of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted					true
Change in accounting principle, accounting standards update, immaterial effect					true
Change in accounting principle, accounting standards update, adoption date					Jan. 01, 2020
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
Power 5 Conference Student Housing [Member]
Summary of Significant Accounting Policies [Line Items]
Beneficial interest for ownership percentage					1.40%
Power 5 Conference Student Housing [Member] | Subsequent Event [Member]
Summary of Significant Accounting Policies [Line Items]
Number of student housing assets sold | Asset	2