REAL ESTATE HELD FOR SALE DISCONTINUED OPERATIONS (Details)	1 Months Ended	3 Months Ended
	Apr. 22, 2016 USD ($) ft²	Mar. 31, 2016 USD ($) ft² properties	Jun. 30, 2015 USD ($) ft² properties	Mar. 31, 2015 USD ($)
Long Lived Assets Held-for-sale [Line Items]
Number of properties classified as held for sale | properties		1
Northwest Point Distribution and Service Centers and North Stemmons III [Member]
Long Lived Assets Held-for-sale [Line Items]
Square Footage of Real Estate Property | ft²		292,000
Gain (Loss) on Sale of Properties		$ 11,332,000
Proceeds from Sale of Property, Plant, and Equipment		18,850,000
Ambassador Row Warehouse (one building sold in 2015) [Member]
Long Lived Assets Held-for-sale [Line Items]
Number of real estate properties transferred to held for sale and sold | properties			1
Square Footage of Real Estate Property | ft²			185,000
Gain (Loss) on Sale of Properties			$ 2,903,000
Proceeds from Sale of Property, Plant, and Equipment			$ 5,250,000
Property sold [Member] | North Stemmons II [Member]
Long Lived Assets Held-for-sale [Line Items]
Square Footage of Real Estate Property | ft²	26,000
Gain (Loss) on Sale of Properties	$ 430,000
Proceeds from Sale of Property, Plant, and Equipment	$ 1,300,000
Land [Member]
Long Lived Assets Held-for-sale [Line Items]
Proceeds from Sale of Property, Plant, and Equipment		673,000		$ 170,000
Gain on sales of land		$ 10,000		$ 123,000