Equity and Earnings Per Common Share - Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Equity and Earnings Per Common Share
Net income (loss)	$ (392,933)	$ 9,648
Less preferred stock dividends	(138)	(29)
Net income (loss) available to common shareholders	$ (393,071)	$ 9,619
Net income (loss) per share-basic and diluted	$ (0.81)	$ 0.04
Weighted average common shares outstanding-basic	483,103	253,877
Weighted average common shares outstanding-diluted	483,103	254,903