REAL ESTATE INVESTMENTS, NET - Intangible Assets Amortization (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Real Estate [Line Items]
Net amount	$ 6,231,211	$ 7,700,000
Below-Market Lease Intangibles
Weighted average amortization period		9 years 3 months 11 days
Tenant Origination and Absorption Costs
Real Estate [Line Items]
April through December 2020	3,681,811
2021	4,014,676
2022	2,979,198
2023	2,102,056
2024	1,897,592
2025	1,897,592
Thereafter	3,677,277
Net amount	$ 20,250,202
Below-Market Lease Intangibles
Weighted average amortization period	7 years 2 months 2 days
Above-Market Lease Intangibles
Real Estate [Line Items]
April through December 2020	$ 148,450
2021	179,882
2022	164,607
2023	161,957
2024	157,327
2025	157,327
Thereafter	232,701
Net amount	$ 1,202,251
Below-Market Lease Intangibles
Weighted average amortization period	7 years 6 months 11 days
Below-Market Lease Intangibles
Below-Market Lease Intangibles
April through December 2020	$ (1,169,464)
2020	(1,551,783)
2021	(1,158,227)
2022	(182,928)
2023	(168,559)
2024	(168,559)
Thereafter	(9,802,017)
Net amount	$ (14,201,537)
Weighted average amortization period	12 years 5 months 2 days