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, 2022	Mar. 31, 2021
Equity and Earnings Per Common Share
Net income	$ 80,040	$ 83,441
Less preferred stock dividends	(138)	(138)
Net income (loss) available to common shareholders	$ 79,902	$ 83,303
Net income per share-basic (in dollars per share)	$ 0.17	$ 0.17
Net income per share-diluted (in dollars per share)	$ 0.17	$ 0.17
Weighted average common shares outstanding-basic	477,646	476,850
Weighted average common shares outstanding-diluted	480,173	479,272