Certain Relationships and Related Party Transactions - Narrative (Details)				3 Months Ended	6 Months Ended
	Mar. 01, 2019 USD ($)	Feb. 28, 2019 USD ($)	Apr. 23, 2017 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($) apartment_complex	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Related Party Transaction [Line Items]
Due from related parties				$ 5,380	$ 5,380		$ 13,772
Insurance pool (up to)		$ 2,500,000
Property loss pool, deductible amount per incident		25,000
Catastrophic insurance (up to)	$ 250,000,000	250,000,000
General liability pool, deductible amount per incident				$ 25,000	$ 25,000
General liability insurance, insured limit for general liability policy (up to)			$ 76,000,000
Maximum
Related Party Transaction [Line Items]
Catastrophic insurance, deductible amount per incident	100,000	100,000
Minimum
Related Party Transaction [Line Items]
Catastrophic insurance, deductible amount per incident	$ 25,000	$ 25,000
Class R Common Stock
Related Party Transaction [Line Items]
Annual fee, percentage of purchase price of common stock sold (as percent)					1.00%
Triggering event to cease payment, percentage of gross proceeds (as percent)				10.00%	10.00%
Underwriting compensation as percentage of Class R gross offering price (as a percent)					8.50%
Class T Common Stock
Related Party Transaction [Line Items]
Annual fee, percentage of purchase price of common stock sold (as percent)					1.00%
Triggering event to cease payment, percentage of gross proceeds (as percent)				10.00%	10.00%
Advisor
Related Party Transaction [Line Items]
Cumulative advances from related party				$ 8,900,000	$ 8,900,000
Term of advisory agreement					1 year
Acquisition fee (as a percent)					2.00%
Monthly asset management fee (as a percent)					0.083%
Disposition fee, as a percentage of the aggregate brokerage commission paid (as percent)					50.00%
Disposition fee (as percent)					2.00%
Debt financing fee (as percent)					0.50%
Formation and other operating expenses					$ 104,266
Due from related parties				585	$ 585		291
Advisor | Primary Offering Price
Related Party Transaction [Line Items]
Approximate reimbursement of organization and offering expenses to be reimbursed, option one (as percent)					4.00%
Offering proceeds, threshold, option one (less than)					$ 500,000,000
Approximate reimbursement of organization and offering expenses to be reimbursed, option two (as percent)					2.50%
Manager
Related Party Transaction [Line Items]
Property management fee (as percent)					4.50%
Due from related parties				585	$ 585		291
Construction management fee (as percent)					5.00%
Debt servicing fee (as percent)					2.75%
Resource Securities
Related Party Transaction [Line Items]
Due from related parties				$ 409	$ 409		$ 682
Resource Securities | Class R Common Stock
Related Party Transaction [Line Items]
Annual fee, percentage of purchase price of common stock sold (as percent)					1.00%
Triggering event to cease payment, percentage of gross proceeds (as percent)				10.00%	10.00%
Underwriting compensation as percentage of Class R gross offering price (as a percent)					8.50%
Resource Securities | Class R Common Stock | Maximum
Related Party Transaction [Line Items]
Selling commission (as percent)					3.00%
Dealer manager fee (as percent)					3.50%
Selling commission (as percent)					5.50%
Resource Securities | Class I Common Stock | Maximum
Related Party Transaction [Line Items]
Dealer manager fee (as percent)					1.50%
Resource Securities | Class T Common Stock
Related Party Transaction [Line Items]
Annual fee, percentage of purchase price of common stock sold (as percent)					1.00%
Period of time to receive annual fee from the date each share is issued					5 years
Percentage of purchase price of common stock sold, total (as percent)					5.00%
Resource America, Inc. | Payne Place | Mortgages
Related Party Transaction [Line Items]
Number of apartment complexes owned | apartment_complex					5
Minimum net worth				$ 50,000,000	$ 50,000,000
Liquidity (no less than)				5,000,000	$ 5,000,000
Aggregate portfolio leverage (as percent) (no more than)					65.00%
The Planning and Zoning Resource Company
Related Party Transaction [Line Items]
Payment for zoning report				1,565	$ 2,716	$ 1,980
Resource America, Inc. and Affiliates
Related Party Transaction [Line Items]
Maximum amount covered for liability insurance program				$ 100,000,000	$ 100,000,000