SUBSEQUENT EVENTS (Details) - Subsequent Event [Member] $ in Millions	1 Months Ended
	Jul. 22, 2016 USD ($) ft² a Integer
Subsequent Event [Line Items]
Proceeds from Sale of Property Held-for-sale | $	$ 2.6
$40 million term loan (2016) [Member]
Subsequent Event [Line Items]
Unsecured debt, notional amount | $	$ 40.0
Debt Instrument, Interest Rate, Stated Percentage	2.335%
Unsecured debt, term (in years) | Integer	5
Long-term debt, margin over LIBOR rate	1.10%
Parc North acquisition [Member]
Subsequent Event [Line Items]
Square Footage of Real Estate Property | ft²	446,000
Number of buildings | Integer	4
Purchase price for development property acquired | $	$ 32.0
Percent Leased	37.00%
Houston land (7 acres) [Member]
Subsequent Event [Line Items]
Area of Land | a	7
Dallas land (8 acres) [Member]
Subsequent Event [Line Items]
Area of Land | a	8
Houston land (4 acres) [Member]
Subsequent Event [Line Items]
Area of Land | a	4