Earnings per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator:
Net Income (Loss) Attributable to Parent	$ (115,074)	$ 33,444	$ (144,398)	$ 60,697
Preferred Stock Dividends, Income Statement Impact	(6,279)	(6,279)	(12,557)	(12,557)
Less: Dividends paid on unvested restricted shares	(15)	(378)	(29)	(690)
Less: Undistributed Earnings allocated to unvested restricted shares	0	0	0	0
Net (loss) income attributable to common shareholders excluding amounts attributable to unvested restricted shares	$ (121,368)	$ 26,787	$ (156,984)	$ 47,450
Denominator:
Weighted-average number of common shares - basic (in shares)	163,543,701	172,661,878	165,346,717	172,729,064
Unvested restricted shares (in shares)	0	104,213	0	79,449
Weighted-average number of common shares - diluted (in shares)	163,543,701	172,766,091	165,346,717	172,808,513
Net income per share attributable to common shareholders - basic (in dollars per share)	$ (0.74)	$ 0.16	$ (0.95)	$ 0.27
Net income per share attributable to common shareholders - diluted (in dollars per share)	$ (0.74)	$ 0.16	$ (0.95)	$ 0.27