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Earnings Per Common Share - Summary of Earnings Per Common Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Numerator for both basic and diluted earnings per common share:      
Net income available to common shareholders $ 181,988 $ 232,135 $ 119,400
Denominator:      
Total average basic common shares outstanding 60,047,177 65,520,527 67,260,796
Effect of dilutive stock options and other stock compensation 168,197 149,443 49,788
Total diluted average common shares outstanding 60,215,374 65,669,970 67,310,584
Earnings per common share—basic $ 3.03 $ 3.54 $ 1.78
Earnings per common share—diluted $ 3.02 $ 3.53 $ 1.77