INTEREST RATE SWAP (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2017 USD ($)
Derivative [Line Items]
Face amount of debt	$ 178,300,000	$ 178,300,000
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%	3.17%
Interest Rate Swap
Derivative [Line Items]
Effectiveness of interest rate cash flow hedge (as a percent)	100.00%	100.00%
Notional amount	$ 25,000,000	$ 25,000,000
Derivative fixed interest rate (as a percent)	3.17%	3.17%
Interest Rate Swap | Other Assets
Derivative [Line Items]
Fair value of interest rate swap agreement	$ 410,000	$ 410,000