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Common Stock, Compensation Plans and Other - Summary of Stock Option Transactions under Plan (Detail) - $ / shares
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Shares    
Outstanding, beginning of year (in shares) 1,590,000 2,776,000
Granted (in shares) 0 10,000
Forfeited/Expired (in shares) (7,000) (35,000)
Exercised (in shares) (183,000) (1,161,000)
Outstanding, end of year (in shares) 1,400,000 1,590,000
Exercisable, end of year (in shares) 1,110,000 1,044,000
Weighted- Average Exercisable Price    
Outstanding, beginning of year (in dollars per share) $ 22.66 $ 20.95
Granted (in dollars per share) 0 29.41
Forfeited/Expired (in dollars per share) 21.78 21.87
Exercised (in dollars per share) 21.36 18.65
Outstanding, ending of year (in dollars per share) 22.84 22.66
Exercisable Weighted Average Exercisable Price, end of year (in dollars per share) $ 22.72 $ 22.34