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Earnings Per Share - Computations of Basic and Diluted Earnings Per Share (Parenthetical) (Detail) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2025
Options and Stock Appreciation Rights (SARs) [Member]      
Earnings Per Share Basic [Line Items]      
Options/SARs to purchase shares of common stock were excluded from the computations of diluted earnings per share 1,167,695 1,205,183 1,209,553