Net Income per Share - Basic and Diluted Net Income per Share of Common Stock Using Two-Class Method (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Basic Earnings
Net income	$ 223,515	$ 18,377	$ 230,174
Less: Preferred dividends	(12,964)	(13,540)	(18,525)
Net income available to common stockholders	210,551	4,837	211,649
Less: Dividends on participating securities	(3,877)	(3,431)	(3,867)
Basic Earnings	206,674	1,406	207,782
Diluted Earnings
Basic Earnings	206,674	1,406	207,782
Add: Dividends on participating securities	3,877	0	3,867
Add: Interest expense on Convertible Notes	35,020	0	35,173
Diluted Earnings	$ 245,571	$ 1,406	$ 246,822
Number of Shares:
Basic weighted-average shares of common stock outstanding	139,869,244	148,004,385	146,881,231
Diluted weighted-average shares of common stock outstanding	168,402,515	148,004,385	175,794,896
Earnings Per Share Attributable to Common Stockholders
Basic (in dollars per share)	$ 1.48	$ 0.01	$ 1.41
Diluted (in dollars per share)	$ 1.46	$ 0.01	$ 1.40