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Common Stock - Summary of Information Regarding Outstanding SARs (Detail) - Stock Appreciation Rights (SARs) - $ / shares
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Restricted Shares Outstanding, Beginning balance 1,056,805 1,105,106
Forfeited (35,248) (48,301)
Restricted Shares Outstanding, Ending balance 1,021,557 1,056,805
Exercisable at end of year 1,021,557 1,056,805
Weighted-Average Grant Date Fair Value of Restricted Stock, Beginning Balance $ 28.37 $ 28.39
Forfeited 28.64 28.83
Weighted-Average Grant Date Fair Value of Restricted Stock, Ending Balance 28.36 28.37
Average Exercise Price, Exercisable at end of year $ 28.36 $ 28.37