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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 |  |  |

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