Earnings Per Share - Basic (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic earnings per share
Net income (loss)	$ (12,898)	$ (2,726)	$ (16,212)	$ (35,761)
Net Income (Loss) Attributable to Noncontrolling Interest	12,689	0	16,214	0
Net Income (Loss) Attributable to Parent	(25,587)	(2,726)	(32,426)	(35,761)
Less: cumulative preferred stock dividends	6,657	6,211	13,198	11,043
Subsidiary Preferred Stock Dividends, Income Statement Impact	2,577	0	3,684	0
Accretion of Subsidiary Preferred Stock to redemption Value	237	0	13,986	0
Net income (loss) attributable to common shareholders	$ (35,058)	$ (8,937)	$ (63,294)	$ (46,804)
Weighted average common stock outstanding	78,668	78,319	78,580	78,259
Basic earnings (loss) per share, Net	$ (0.45)	$ (0.11)	$ (0.81)	$ (0.60)