ORGANIZATION AND BUSINESS (Details) $ / shares in Units, ft² in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($) ft² state property class_of_stock $ / shares	Aug. 14, 2020 $ / shares	May 29, 2020 $ / shares	Mar. 31, 2020 $ / shares	Dec. 31, 2019 USD ($)	Apr. 30, 2019 USD ($)	Mar. 28, 2019 USD ($)	Sep. 22, 2016 USD ($) class_of_stock $ / shares
Class of Stock [Line Items]
Number of real estate properties | property	2
Net rentable area (in square feet) | ft²	391
Number of states in which real estate properties are owned | state	2
Percentage of rentable space leased	100.00%
Classes of common stock | class_of_stock	2
Common stock, shares issued						$ 31,200,000
Unsold shares deregistered						3,500,000,000
Credit facility	$ 24,175,000				$ 24,175,000
Class A Common Stock
Class of Stock [Line Items]
Common stock, shares issued	$ 25,114				24,974
Net asset value (in dollars per share) | $ / shares	$ 7.76			$ 7.63
Class T Common Stock
Class of Stock [Line Items]
Common stock, shares issued	$ 7,124				$ 7,229
Net asset value (in dollars per share) | $ / shares	$ 7.76			$ 7.63
IPO
Class of Stock [Line Items]
Common stock, shares authorized, value (up to)								$ 3,500,000,000.0
Multi-Class Offering, Primary Offering
Class of Stock [Line Items]
Common stock, shares authorized, value (up to)								$ 2,500,000,000.0
Classes of common stock | class_of_stock								2
Common stock, shares issued						30,200,000
Multi-Class Offering, Primary Offering | Class A Common Stock
Class of Stock [Line Items]
Common stock, shares authorized, value (up to)								$ 1,250,000,000.00
Share price (in dollars per share) | $ / shares								$ 10.00
Common stock, shares issued						23,300,000
Multi-Class Offering, Primary Offering | Class T Common Stock
Class of Stock [Line Items]
Common stock, shares authorized, value (up to)								$ 1,250,000,000.00
Share price (in dollars per share) | $ / shares								$ 9.57
Common stock, shares issued						6,900,000
Distribution Reinvestment Plan
Class of Stock [Line Items]
Common stock, shares authorized, value (up to)							$ 4,300,000	$ 1,000,000,000.00
Common stock, shares issued						1,000,000
Distribution Reinvestment Plan | Class A Common Stock
Class of Stock [Line Items]
Share price (in dollars per share) | $ / shares								$ 9.10
Common stock, shares issued						655,000
Distribution Reinvestment Plan | Class T Common Stock
Class of Stock [Line Items]
Common stock, shares issued						$ 350,000
CCC III OP
Class of Stock [Line Items]
General partner partnership interest percentage	100.00%
Common Stock | Distribution Reinvestment Plan | Class A Common Stock
Class of Stock [Line Items]
Share price (in dollars per share) | $ / shares			$ 7.63
Common Stock | Distribution Reinvestment Plan | Class T Common Stock
Class of Stock [Line Items]
Share price (in dollars per share) | $ / shares			$ 7.63
Line of credit | J. P. Morgan Chase Bank, N.A.
Class of Stock [Line Items]
Credit facility	$ 24,200,000
Forecast | Common Stock | Distribution Reinvestment Plan | Class A Common Stock
Class of Stock [Line Items]
Share price (in dollars per share) | $ / shares		$ 7.76
Forecast | Common Stock | Distribution Reinvestment Plan | Class T Common Stock
Class of Stock [Line Items]
Share price (in dollars per share) | $ / shares		$ 7.76