DISCONTINUED OPERATIONS - Revenue and Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Expenses:
Income from operations of assets held for sale	$ 0	$ 703	$ 0	$ 3,061
Held for sale
DISCONTINUED OPERATIONS
Revenue—Interest and other income		1,198		4,729
Expenses:
Interest expense		355		1,231
Fees to related party		137		417
General and administrative		3		20
Total expenses		495		1,668
Income from operations of assets held for sale		$ 703		$ 3,061