COMMON SHARESHOLDERS' EQUITY AND NONCONTROLLING INTERESTS - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Equity [Abstract]
Dividends on preferred stock	$ 7,519	$ 7,519	$ 7,519
Preferred stock value outstanding	$ 155,600	$ 155,600