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Interim Financial Statements (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
May 13, 2025
Mar. 05, 2025
Oct. 31, 2023
Dividends payable, amount per share         $ 0.125 $ 0.125  
Purchase of treasury shares (in shares) 0   330,441        
Purchase of treasury shares   $ 7,182 $ 13,814 $ 32,938      
Class A Common Stock [Member] | 2023 Share Repurchase Program [Member]              
Stock repurchase program, authorized amount             $ 250,000