Earnings per Share - Schedule of Calculation of Basic and Diluted Earnings per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Net Income (Loss)	$ 32,391	$ 31,955	$ 42,928	$ (232,790)	$ 64,347	$ (189,862)
Preferred Stock Dividends	(6,799)		(2,255)		(12,923)	(2,258)
Participating Securities' Share in Earnings (Loss)	(148)		(125)		(294)	(393)
Series B Preferred Stock Redemption Make-Whole Payment	(22,485)				(22,485)
Series B Preferred Stock Accretion and Write-off of Discount	(23,997)		(443)		(25,449)	(443)
Net (Loss) Income Attributable to Common Stockholders	$ (21,038)		$ 40,105		$ 3,196	$ (192,956)
Weighted Average Common Shares Outstanding, Basic	76,899,270		76,644,038		76,897,453	76,554,680
Incremental shares of common stock issued from the assumed exercise of the Warrants					4,433,898
Weighted Average Common Shares Outstanding, Diluted	76,899,270		76,644,038		81,331,351	76,554,680
(Loss) Earnings per Common Share, Basic	$ (0.27)		$ 0.52		$ 0.04	$ (2.53)
(Loss) Earnings per Common Share, Diluted	$ (0.27)		$ 0.52		$ 0.04	$ (2.53)