DEBT - Interest Expenses (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Debt Instrument [Line Items]
Interest expense	$ 3,904,656	$ 2,160,350
Amortization of deferred financing costs	133,240	272,522
Loss on interest rate swaps	1,284,967	320,526
Other	48,073	0
Accrued interest payable	25,489		$ 22,282
Mortgage Notes Payable
Debt Instrument [Line Items]
Interest expense	2,184,977	1,476,496
Amortization of deferred financing costs	119,031	270,522
Loss on interest rate swaps	1,365,491	327,814
Unsecured Credit Facility
Debt Instrument [Line Items]
Interest expense	154,624	83,518
Amortization of deferred financing costs	$ 32,460	$ 2,000