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Earnings Per Common Share - Computation of basic and diluted EPS (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Basic earnings per common share:      
Net income $ 534,783 $ 494,308 $ 496,049
Weighted-average basic common shares 76,303 76,051 74,551
Basic earnings per common share (in dollars per share) $ 7.01 $ 6.5 $ 6.65
Diluted earnings per common share:      
Net income $ 534,783 $ 494,308 $ 496,049
Weighted-average basic common shares 76,303 76,051 74,551
Effect of dilutive securities (in shares) 459 429 630
Weighted-average dilutive shares 76,762 76,480 75,181
Diluted earnings per common share (in dollars per share) $ 6.97 $ 6.46 $ 6.6