BUSINESS AND ORGANIZATION (Details)				2 Months Ended	6 Months Ended	12 Months Ended
	Aug. 11, 2017 shares	Dec. 31, 2015 shares	Jun. 24, 2015 $ / shares shares	Jul. 20, 2016 shares	Dec. 31, 2015 shares	Dec. 31, 2019 USD ($) property $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Feb. 01, 2020 $ / shares	Jan. 31, 2020 $ / shares	Dec. 23, 2019 USD ($)	Jan. 14, 2019 $ / shares	Jan. 19, 2018 $ / shares	Jul. 15, 2015 USD ($)
Business And Organization [Line Items]
Issued common stock (in shares)						450,000,000
Preferred stock, shares authorized (in shares)						50,000,000	50,000,000
Preferred stock (in usd per share) | $ / shares						$ 0.001	$ 0.001
Issuance of common stock in offerings | $						$ 40,908,373	$ 50,101,989
Number of real estate properties | property						45
REIT I
Business And Organization [Line Items]
Number of real estate properties acquired | property						20
Tenant-in-common | Real Estate Investment
Business And Organization [Line Items]
Ownership (as a percent)						72.70%
Common Class S
Business And Organization [Line Items]
Common stock (in usd per share) | $ / shares						$ 0.001	$ 0.001
Common stock, shares authorized (in shares)						100,000,000	100,000,000
Issuance of common stock in offering (in shares)	100,000,000					186,606
Net asset value (in usd per share) | $ / shares											$ 10.16	$ 10.05
Common Class C
Business And Organization [Line Items]
Common stock (in usd per share) | $ / shares						$ 0.001	$ 0.001
Common stock, shares authorized (in shares)						300,000,000	300,000,000
Common stock subscriptions | $										$ 800,000,000
Common Class C | REIT I
Business And Organization [Line Items]
Issuance of common stock in merger (in shares)						8,042,221.6
Common Class C | Minimum
Business And Organization [Line Items]
Issuance of common stock in offering (in shares)				500
Distribution Reinvestment Plan | Common Class C
Business And Organization [Line Items]
Common stock subscriptions | $										75,000,000
Primary Offering
Business And Organization [Line Items]
Common stock subscriptions | $													$ 90,000,000
Follow-on Offering | Common Class C
Business And Organization [Line Items]
Common stock subscriptions | $										$ 725,000,000
Registered Offering
Business And Organization [Line Items]
Common stock subscriptions | $													$ 10,000,000
Registered Offering | Common Class S
Business And Organization [Line Items]
Issuance of common stock in offering (in shares)						2,293
Issuance of common stock in offerings | $						$ 1,893,827
Registered Offering | Common Class C
Business And Organization [Line Items]
Issuance of common stock in offering (in shares)						17,887,949
Issuance of common stock in offerings | $						$ 179,698,905
Registered Offering | Distribution Reinvestment Plan | Common Class C
Business And Organization [Line Items]
Issuance of common stock in offering (in shares)						1,527,839
Sponsor
Business And Organization [Line Items]
Issuance of common stock in offering (in shares)		10,000	10,000
Shares issued (in usd per share) | $ / shares			$ 10.00
Sponsor | Common Class C
Business And Organization [Line Items]
Issuance of common stock in offering (in shares)					20,000	10,740
Subsequent Event | Common Class S
Business And Organization [Line Items]
Net asset value (in usd per share) | $ / shares								$ 10.27	$ 10.16
Retail
Business And Organization [Line Items]
Number of real estate properties | property						20
Retail | REIT I
Business And Organization [Line Items]
Number of real estate properties acquired | property						11
Office
Business And Organization [Line Items]
Number of real estate properties | property						16
Office | REIT I
Business And Organization [Line Items]
Number of real estate properties acquired | property						6
Industrial Property
Business And Organization [Line Items]
Number of real estate properties | property						9
Industrial Property | REIT I
Business And Organization [Line Items]
Number of real estate properties acquired | property						3
Land
Business And Organization [Line Items]
Number of real estate properties | property						1
BrixInvest | Class M OP Units
Business And Organization [Line Items]
Other ownership interests, units issued (in shares)						657,949.5
Operating Partnership
Business And Organization [Line Items]
Ownership interest (as a percent)						99.00%
Remaining ownership interest ( as a percent)						1.00%
Daisho OP Holdings, LLC
Business And Organization [Line Items]
Ownership interest (as a percent)						87.00%
BrixInvest
Business And Organization [Line Items]
Ownership interest (as a percent)						12.00%