REAL ESTATE ACTIVITY (Details Narrative) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($) ft² a Number	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) ft² a Number	Jun. 30, 2016 USD ($)
Number of properties | Number	58		58
Acres of land | ft²	3,527		3,527
Gain (loss) on land sales	$ (476)	$ 1,719	$ (31)	$ 3,370
Payment for construction or predevelopment of various apartment complexes			24,400
Capitalized interest costs	$ 900		$ 900
Related Parties [Member]
Area of land sold | a	91		91
Land Parcel Acquired [Member]
Number of properties | Number	4		4
Acquisition of income-producing properties			$ 12,900
Acres of land | a	34.56		34.56
Land [Member] | TEXAS
Area of land sold | a	10.82		10.82
Land sales - total consideration			$ 1,600
Gain (loss) on land sales			$ (100)