DEBT - Interest Expenses Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Interest expense	$ 7,382,610	$ 5,577,828
Amortization of deferred financing costs	638,200	927,535
Loss (gain) on interest rate swaps	970,210	149,714
Accrued interest payable	22,282	7,649
Mortgage Notes Payable
Debt Instrument [Line Items]
Interest expense	5,698,605	4,065,686
Amortization of deferred financing costs	601,659	897,535
Loss (gain) on interest rate swaps	843,174	261,198
Unsecured Debt
Debt Instrument [Line Items]
Interest expense	190,130	323,409
Amortization of deferred financing costs	36,542	30,000
Forfeited loan fee	$ 12,500	$ 0