Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net income	$ 103,360	$ 74,262
Preferred stock dividends	(2,875)	(2,875)
Net income available to common equity	100,485	71,387
Common shareholder dividends	(31,808)	(30,372)
Unvested share-based payment awards	(205)	(211)
Undistributed earnings	68,472	40,804
Undistributed earnings allocated to common shareholders	68,086	40,548
Undistributed earnings allocated to unvested share-based payment awards	386	256
Basic
Distributed earnings to common shareholders	31,808	30,372
Undistributed earnings allocated to common shareholders	68,086	40,548
Total common shareholders earnings, basic	99,894	70,920
Diluted
Distributed earnings to common shareholders	31,808	30,372
Undistributed earnings allocated to common shareholders	68,086	40,548
Total common shareholders earnings, diluted	$ 99,894	$ 70,920
Weighted average common shares outstanding	149,763	148,781
Effect of dilutive common stock awards	1,365	1,711
Diluted weighted average common shares outstanding	151,128	150,492
Basic earnings per common share	$ 0.67	$ 0.48
Diluted earnings per common share	$ 0.66	$ 0.47