SUMMARY OF SIGNIFICANT ACOUNTING POLICIES (Details)		3 Months Ended		12 Months Ended
	Jan. 31, 2020 $ / shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) $ / shares	Dec. 31, 2019 USD ($) Segments $ / shares shares	Dec. 31, 2018 USD ($) Segments $ / shares shares	Mar. 27, 2020 shares	Feb. 01, 2020 $ / shares	Jan. 14, 2019 $ / shares	Jan. 19, 2018 $ / shares	Jan. 18, 2018 $ / shares
Accounting Policies [Line Items]
Rental income from tenant reimbursements | $				$ 4,857,794	$ 3,258,579
Advertising expense | $		$ 0		$ 0	$ 0
Potentially dilutive securities outstanding (in shares) | shares					0
Dividends (in usd per share)				$ 0.7035	$ 0.7035
Restricted cash | $		$ 113,362	$ 3,503,242	$ 113,362	$ 3,503,242
Tenant reimbursements | $				$ 98,329	$ 3,535,163
Percentage of share in property owned				72.70%	72.70%
Share price (in usd per share)										$ 10
Stock repurchase program, shares authorized (in shares) | shares		2,376,509		2,376,509
Impairment charges for real estate investments | $				$ 0	$ 0
Number of reportable segments | Segments				1	1
Class M OP Units
Accounting Policies [Line Items]
Conversion ratio				0.2
Class P OP Units
Accounting Policies [Line Items]
Other ownership interests, units issued (in shares) | shares		56,029		56,029
Conversion ratio				0.2
Common Class C
Accounting Policies [Line Items]
Earnings (loss) per share (in usd per share)				$ (0.29)	$ (0.16)
Dividends (in usd per share)				$ 0.7035	0.7035
Share price (in usd per share)										$ 10.00
Conversion ratio				1
Common Class S
Accounting Policies [Line Items]
Earnings (loss) per share (in usd per share)				$ (0.27)	$ (0.32)
Dividends (in usd per share)			$ 0.7035	$ 0.7035
Net asset value (in usd per share)								$ 10.16	$ 10.05
Less Than One Year | Common Class S
Accounting Policies [Line Items]
Stock redemption price (as a percent)									97.00%
Less Than Two Year | Common Class S
Accounting Policies [Line Items]
Stock redemption price (as a percent)									98.00%
Later than Two Year but Less than Three Year
Accounting Policies [Line Items]
Stock redemption price (as a percent)									99.00%
Later than Three years
Accounting Policies [Line Items]
Stock redemption price (as a percent)									100.00%
Minimum
Accounting Policies [Line Items]
Intangible assets, estimated useful lives				3 years
Maximum
Accounting Policies [Line Items]
Intangible assets, estimated useful lives				5 years
Shares authorized to be repurchased per month (as a percent)				2.00%
Shares authorized to be repurchased per quarter (as a percent)				5.00%
Shares authorized to be repurchased per year (as a percent)				20.00%
Building | Minimum
Accounting Policies [Line Items]
Estimated useful lives (in years)				10 years
Building | Maximum
Accounting Policies [Line Items]
Estimated useful lives (in years)				48 years
Site Improvement | Maximum
Accounting Policies [Line Items]
Estimated useful lives (in years)				15 years
Tenant Improvement
Accounting Policies [Line Items]
Estimated useful lives (in years)				15 years
Tenant Improvement | Maximum
Accounting Policies [Line Items]
Estimated useful lives (in years)				15 years
Impounded Property Tax
Accounting Policies [Line Items]
Restricted cash to fund property tax | $		$ 20,678	$ 16,315	$ 20,678	$ 16,315
Subsequent Event | Common Class C
Accounting Policies [Line Items]
Stock repurchase program, shares authorized (in shares) | shares						1,737,191
Subsequent Event | Common Class S
Accounting Policies [Line Items]
Net asset value (in usd per share)	$ 10.16						$ 10.27
Stock repurchase program, shares authorized (in shares) | shares						3,309
Subsequent Event | Maximum
Accounting Policies [Line Items]
Gross offering proceeds, percentage	3.00%
Lease Agreements
Accounting Policies [Line Items]
Restricted cash | $		$ 92,684	$ 3,486,927	$ 92,684	$ 3,486,927
BrixInvest | Class M OP Units
Accounting Policies [Line Items]
Other ownership interests, units issued (in shares) | shares		657,949.5		657,949.5
BrixInvest | Class P OP Units
Accounting Policies [Line Items]
Other ownership interests, units issued (in shares) | shares		26,318		26,318
Sponsor | Reimbursable organizational and offering expenses
Accounting Policies [Line Items]
Gross offering proceeds, percentage				3.00%	3.00%