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Earnings per Share - Composition of Weighted-Average Common Shares (Denominator) Used in Basic and Diluted Earnings Per Share (Detail) - $ / shares
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Average Shares Outstanding (in shares) 101,556,427 93,612,043 95,583,890
Weighted Average Number of Shares Outstanding, Assuming Dilution, Deferred Compensation Plan 56,955 55,820 55,683
Weighted average common shares and common stock equivalents used to calculate diluted earnings per share 101,822,201 93,887,447 95,840,285
Basic Earnings Per Share (in dollars per share) $ 1.55 $ 1.37 $ 1.45
Diluted Earnings Per Share (in dollars per share) $ 1.54 $ 1.37 $ 1.44
Weighted Average Number of Shares Outstanding, Restricted Stock 208,819 219,584 200,712
Common Shares Issued      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Average Shares Outstanding (in shares) 122,780,523 113,914,902 113,914,902
Treasury Stock, Common      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Average Shares Outstanding (in shares) 21,004,846 20,089,722 18,140,857
Deferred Compensation Plan      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Average Shares Outstanding (in shares) 56,206 55,734 55,590
Restricted Stock [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Average Shares Outstanding (in shares) 163,044 157,403 134,565