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Earnings (Loss) Per Share - Components of Earnings Per Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Earnings Per Share [Abstract]        
Net income from continuing operations available to common shareholders $ 56,519 $ 58,042 $ 131,415 $ 129,282
Net loss from discontinued operations 0 0 0 (38,036)
Net income available to common shareholders $ 56,519 $ 58,042 $ 131,415 $ 91,246
Weighted-average number of common shares outstanding - basic (shares) 32,712,616 32,279,625 32,834,150 32,082,878
Share-based compensation plans (shares) 866,397 1,461,843 1,116,823 1,211,197
Weighted-average number of common shares - diluted (shares) 33,579,013 33,741,468 33,950,973 33,294,075
Basic earnings per common share from continuing operations (usd per share) $ 1.73 $ 1.80 $ 4.00 $ 4.03
Basic earnings (loss) per common share from discontinued operations (usd per share) 0 0 0 (1.19)
Basic earnings (loss) per common share (usd per share) 1.73 1.80 4.00 2.84
Diluted earnings per common share from continuing operations (usd per share) 1.68 1.72 3.87 3.88
Diluted earnings (loss) per common share from discontinued operations (usd per share) 0 0 0 (1.14)
Diluted earnings (loss) per common share (usd per share) $ 1.68 $ 1.72 $ 3.87 $ 2.74