v3.26.1
Earnings per Share - Composition of Weighted-Average Common Shares (Denominator) Used in Basic and Diluted Earnings Per Share (Detail) - $ / shares
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings Per Share [Abstract]        
Weighted Average Number of Shares Issued, Basic 126,599,991 125,612,097 126,599,991 124,613,288
Average treasury shares (in shares) (25,125,093) (21,656,080) (24,685,464) (21,700,837)
Weighted Average Number of Shares, Deferred Compensation Plans (56,742) (56,581) (56,724) (56,562)
Average unearned nonvested shares (223,910) (271,044) (204,314) (252,952)
Weighted average common shares and common stock equivalents used to calculate basic earnings per share (in shares) 101,194,246 103,628,392 101,653,489 102,602,937
Additional common stock equivalents (nonvested stock) used to calculate diluted earnings per share 308,025 243,412 259,937 226,784
Weighted Average Number Of Additional Shares Deferred Compensation Plan 56,582 56,624 56,582 56,624
Weighted average common shares and common stock equivalents used to calculate diluted earnings per share (in shares) 101,558,853 103,928,428 101,970,008 102,886,345
Basic Earnings per Share (in dollars per share) $ 0.44 $ 0.32 $ 0.81 $ 0.64
Diluted Earnings per Share (in dollars per share) $ 0.44 $ 0.32 $ 0.81 $ 0.64