INTEREST RATE SWAP (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Apr. 30, 2016
Derivative [Line Items]
Face amount of debt	$ 203,100,230
Wells Fargo Mortgage Note Payable Originated April 15, 2016
Derivative [Line Items]
Face amount of debt	$ 25,000,000	$ 25,000,000
Derivative fixed interest rate (as a percent)	3.17%
Interest Rate Swap
Derivative [Line Items]
Effectiveness of interest rate cash flow hedge (as a percent)	100.00%
Notional amount	$ 25,000,000
Derivative fixed interest rate (as a percent)	3.17%
Interest Rate Swap | Other Assets
Derivative [Line Items]
Fair value of interest rate swap agreement to hedge cash flows	$ 845,000