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Stock-Based Compensation (Detail) - (Table 4) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding at January 1, 2012 2,766,000 2,531,000  
Outstanding at January 1, 2012 (in Dollars per share) $ 29.82 $ 29.06  
Granted (237,000) (276,000)  
Granted (in Dollars per share) $ 30.74 $ 36.95  
Exercised (1,654,000) (24,000)  
Exercised (in Dollars per share) $ 25.14 $ 25.61  
Expired (in shares) (229,000)    
Expired (in Dollars per share) $ 36.01    
Cancelled/Forfeited (2,000) (17,000)  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price $ 46.28 $ 39.28  
Outstanding at June 30, 2012 1,118,000 2,766,000 2,531,000
Outstanding at June 30, 2012 (in Dollars per share) $ 35.62 $ 29.82 $ 29.06
Outstanding at June 30, 2012 3 years 2 months 12 days 2 years  
Outstanding at June 30, 2012 (in Dollars) $ 7,684 $ 11,778  
Exercisable at June 30, 2012 935,000 2,543,000  
Exercisable at June 30, 2012 (in Dollars per share) $ 35.91 $ 29.11  
Stock based compensation, shares exercisable, weighted average remaining contractual term 3 years 1 year 9 months 18 days  
Exercisable at June 30, 2012 (in Dollars) $ 6,167 $ 11,741  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum 3.70% 1.20% 0.10%
Risk free interest rate 4.70% 3.00% 1.00%