REAL ESTATE INVESTMENTS - Finite-Lived Intangible Assets, Future Amortization (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Below Market Lease, Net, Amortization Income, Fiscal Year Maturity [Abstract]
2020	$ (1,559,285)
2021	(1,551,783)
2022	(1,158,227)
2023	(182,928)
2024	(168,559)
Thereafter	(9,970,577)
Net amount	$ (14,591,359)
Weighted-Average Remaining Amortization Period (in years)	9 years 3 months 18 days
Tenant Origination and Absorption Costs
Real Estate [Line Items]
2020	$ 4,909,081
2021	4,014,676
2022	2,979,198
2023	2,102,056
2024	1,897,592
Thereafter	5,358,759
Net amount	$ 21,261,362	$ 14,544,565
Below Market Lease, Net, Amortization Income, Fiscal Year Maturity [Abstract]
Weighted-Average Remaining Amortization Period (in years)	7 years 2 months 20 days
Above-Market Lease Intangibles
Real Estate [Line Items]
2020	$ 197,933
2021	179,882
2022	164,607
2023	161,957
2024	157,327
Thereafter	390,028
Net amount	$ 1,251,734	584,248
Below Market Lease, Net, Amortization Income, Fiscal Year Maturity [Abstract]
Weighted-Average Remaining Amortization Period (in years)	7 years 8 months 20 days
Below-Market Lease Intangibles
Below Market Lease, Net, Amortization Income, Fiscal Year Maturity [Abstract]
Net amount	$ (14,591,359)	$ (2,595,382)
Weighted-Average Remaining Amortization Period (in years)	12 years 6 months 28 days