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Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended
Jul. 31, 2024
Feb. 29, 2024
May 31, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2013
Stock-based compensation            
Shares tendered by employees to pay employee withholding taxes (in shares)       158,333    
Nonvested Shares, Share Units or DEU            
Stock-based compensation            
Total fair value of shares vested       $ 24.4 $ 14.6  
Nonvested Shares or Share Units Outstanding            
Stock-based compensation            
Total unrecognized compensation expense       $ 31.2    
Expected weighted average period for recognition of expense       2 years 6 months 29 days    
Time-Based Share Awards | Certain Vice President And Staff Level Employee | Nonvested Share Units | Incentive Program Bonus Award Fiscal Year Performance            
Stock-based compensation            
Vesting period   2 years        
Time-Based Share Awards | Certain Vice President And Staff Level Employee | Nonvested Share Units | Incentive Program Bonus Award Fiscal Year Performance | First Vesting Date            
Stock-based compensation            
Vesting percentage   50.00%        
Time-Based Share Awards | Certain Vice President And Staff Level Employee | Nonvested Share Units | Incentive Program Bonus Award Fiscal Year Performance | Second Vesting Date            
Stock-based compensation            
Vesting percentage   50.00%        
Time-Based Share Awards | Employee | Nonvested Share Units | Incentive Program Bonus Award Fiscal Year Performance            
Stock-based compensation            
Vesting period   3 years        
Time-Based Share Awards | Employee | Nonvested Share Units | Incentive Program Bonus Award Fiscal Year Performance | First Vesting Date            
Stock-based compensation            
Vesting percentage 33.33% 33.33%        
Time-Based Share Awards | Employee | Nonvested Share Units | Incentive Program Bonus Award Fiscal Year Performance | Second Vesting Date            
Stock-based compensation            
Vesting percentage 33.33% 33.33%        
Time-Based Share Awards | Employee | Nonvested Share Units | Incentive Program Bonus Award Fiscal Year Performance | Third Vesting Date            
Stock-based compensation            
Vesting percentage 33.33% 33.33%        
2013 Plan            
Stock-based compensation            
Increase in number of shares authorized (in shares)     2,000,000      
Shares authorized (in shares)           7,500,000
Number of share available for future grant (in shares)       3,300,000    
2013 Plan | Time-Based Share Awards | Certain Senior Management | Nonvested Shares            
Stock-based compensation            
Performance period 3 years 3 years        
2013 Plan | Time-Based Share Awards | Certain Senior Management | Nonvested Shares | First Vesting Date            
Stock-based compensation            
Vesting percentage 33.33% 33.33%        
2013 Plan | Time-Based Share Awards | Certain Senior Management | Nonvested Shares | Second Vesting Date            
Stock-based compensation            
Vesting percentage 33.33% 33.33%        
2013 Plan | Time-Based Share Awards | Certain Senior Management | Nonvested Shares | Third Vesting Date            
Stock-based compensation            
Vesting percentage 33.33% 33.33%        
2013 Plan | Vesting Based On Performance | Certain Senior Management | Nonvested Shares            
Stock-based compensation            
Performance period 3 years 3 years        
2013 Plan | Vesting Based On Performance | Certain Senior Management | Nonvested Shares | Maximum            
Stock-based compensation            
Vesting percent 200.00% 200.00%