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Capital Stock - Details Regarding Outstanding and Exercisable Stock Options (Detail) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Number of Outstanding Options (in shares) 5,393,000      
Outstanding Options, Weighted-Average Remaining Life (Years) 5 years 6 months      
Outstanding Options, Weighted-Average Exercise Price (dollars per share) $ 7.27 $ 6.99 $ 9.90 $ 10.02
Number of Exercisable Options (in shares) 4,392,000      
Exercisable Options, Weighted-Average Remaining Life (Years) 4 years 8 months 12 days      
Exercisable Options, Weighted-Average Exercise Price (dollars per share) $ 8.01 $ 8.03 $ 10.86  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Deferred 18,932 19,097    
Performance Shares        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Number of shares or units granted equity based compensation awards     489,443  
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture     $ 5.7  
Restricted Stock Units        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Number of shares or units granted equity based compensation awards 329,735 787,586 355,944  
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture $ 1.9 $ 2.3 $ 1.4  
Vested restricted stock (in shares) 651,135 631,706 880,320  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Deferred 354,580 243,171    
Stock Options        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value $ 7.4 $ 1.7    
Risk-free interest rate used in computing fair value of options granted 3.83% 3.01%    
Range Of Exercise Prices [Member]        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Number of Outstanding Options (in shares) 2,602,000      
Outstanding Options, Weighted-Average Remaining Life (Years) 6 years 10 months 24 days      
Outstanding Options, Weighted-Average Exercise Price (dollars per share) $ 3.37      
Number of Exercisable Options (in shares) 1,999,000      
Exercisable Options, Weighted-Average Remaining Life (Years) 6 years 6 months      
Exercisable Options, Weighted-Average Exercise Price (dollars per share) $ 3.52      
Range of Exercise Prices, lower limit (USD per share) 0.00      
Range of Exercise Prices, upper limit (USD per share) $ 4.99      
Range Of Exercise Prices One [Member]        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Number of Outstanding Options (in shares) 2,043,000      
Outstanding Options, Weighted-Average Remaining Life (Years) 4 years 8 months 12 days      
Outstanding Options, Weighted-Average Exercise Price (dollars per share) $ 8.17      
Number of Exercisable Options (in shares) 1,645,000      
Exercisable Options, Weighted-Average Remaining Life (Years) 3 years 7 months 6 days      
Exercisable Options, Weighted-Average Exercise Price (dollars per share) $ 8.75      
Range of Exercise Prices, lower limit (USD per share) 5.00      
Range of Exercise Prices, upper limit (USD per share) $ 9.99      
Range Of Exercise Prices Two [Member]        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Number of Outstanding Options (in shares) 571,000      
Outstanding Options, Weighted-Average Remaining Life (Years) 2 years 9 months 18 days      
Outstanding Options, Weighted-Average Exercise Price (dollars per share) $ 10.18      
Number of Exercisable Options (in shares) 571,000      
Exercisable Options, Weighted-Average Remaining Life (Years) 2 years 9 months 18 days      
Exercisable Options, Weighted-Average Exercise Price (dollars per share) $ 10.18      
Range of Exercise Prices, lower limit (USD per share) 10.00      
Range of Exercise Prices, upper limit (USD per share) $ 19.99      
Range Of Exercise Prices Three [Member]        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Number of Outstanding Options (in shares) 177,000      
Outstanding Options, Weighted-Average Remaining Life (Years) 1 year 1 month 6 days      
Outstanding Options, Weighted-Average Exercise Price (dollars per share) $ 44.90      
Number of Exercisable Options (in shares) 177,000      
Exercisable Options, Weighted-Average Remaining Life (Years) 1 year 1 month 6 days      
Exercisable Options, Weighted-Average Exercise Price (dollars per share) $ 44.90      
Range of Exercise Prices, lower limit (USD per share) 20.00      
Range of Exercise Prices, upper limit (USD per share) $ 59.99