SEGMENT DISCLOSURE - Reconciliation Of Segment Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment disclosure
Asset management and other fees to related parties	$ (6,211)	$ (8,700)
Interest expense	(6,633)	(9,773)
General and administrative	(3,376)	(1,679)
Transaction costs	0	(13)
Depreciation and amortization	(13,148)	(17,231)
Gain on sale of real estate	0	187,734
Total segment net operating income	1,010	194,327
Provision for income taxes	(388)	(392)
NET INCOME	622	193,935
Net income attributable to noncontrolling interests	(4)	(5)
NET INCOME ATTRIBUTABLE TO THE COMPANY	618	193,930
Reportable segments
Segment disclosure
Total segment net operating income	28,225	42,115
Corporate and Reconciling Items
Segment disclosure
Asset management and other fees to related parties	(5,610)	(7,856)
Interest expense	(6,449)	(9,631)
General and administrative	(2,008)	(791)
Transaction costs	0	(13)
Depreciation and amortization	(13,148)	(17,231)
Gain on sale of real estate	$ 0	$ 187,734