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Share-based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2022
May 31, 2019
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Restricted Stock Units (RSUs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based payment arrangement, (expense) recouped     $ 3.2 $ 1.4 $ 6.5 $ 4.3
Employee service share-based compensation, unrecognized compensation costs on non-vested awards     13.2   $ 13.2  
Granted (in shares)         357,408  
Granted (in dollars per share)         $ 39.47  
Restricted Stock Units (RSUs) | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation arrangement by share-based payment award, award vesting period, years         1 year  
Restricted Stock Units (RSUs) | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation arrangement by share-based payment award, award vesting period, years         4 years  
Performance Shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based payment arrangement, (expense) recouped     0.5 $ 0.2 $ (0.1) $ 1.8
Employee service share-based compensation, unrecognized compensation costs on non-vested awards     3.5   $ 3.5  
Granted (in shares)         124,464  
Granted (in dollars per share)         $ 41.00  
Performance Shares | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation arrangement by share-based payment award, award vesting period, years         3 years  
Performance Shares | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation arrangement by share-based payment award, award vesting period, years         4 years  
Stock Appreciation Rights (SARs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation arrangement by share-based payment award, award vesting period, years 3 years          
Share-based payment arrangement, (expense) recouped     (0.1)      
Granted (in shares) 135,000          
SARs weighted average exercise price (in dollars per share) $ 43.80          
Granted (in dollars per share) $ 8.28          
Unamortized expense     $ 1.0   $ 1.0  
2019 Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation arrangement by share-based payment award, number of shares authorized (in shares)   1,885,000        
Expiration period   10 years