Earnings Per Common Share - Basic and Diluted Earnings Per Common Share (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net income	$ 135,690	$ 177,653
Less: Preferred stock dividends	1,669	1,669
Net income available to common shareholders	134,021	175,984
Less: Earnings allocated to participating securities	1,639	1,807
Distributed earnings allocated to common stock	59,080	56,006
Undistributed earnings allocated to common stock	73,302	118,171
Net earnings allocated to common stock	$ 132,382	$ 174,177
Weighted-average shares outstanding for basic earnings per common share	64,216,323	64,373,563
Dilutive effect of stock compensation	155,408	258,513
Weighted-average shares outstanding for diluted earnings per common share	64,371,731	64,632,076