RELATED PARTY TRANSACTIONS AND FEES (Details 1) - Regis Realty Prime, LLC [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fees:
Property acquisition	$ 10,776	$ 1,932	$ 348
Property management, construction management and leasing commissions	888	682	544
Real estate brokerage	787	1,105	2,752
Total fees	$ 12,451	$ 3,719	$ 3,644