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Employee Benefit Plans (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 01, 2023
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2023
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]        
Defined contribution plan recognized expenses   $ 5,300 $ 4,400 $ 3,400
Deferred compensation liability   $ 13,707 12,027  
Maximum        
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]        
Age of employee   65 years    
Retiree medical plan        
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]        
Deferred compensation requisite service period 10 years 10 years    
Unfunded liability   $ 200 300  
Retiree medical plan | Minimum        
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]        
Age of employee 50 years 55 years    
Retirement age (between) 60 years      
Deferred compensation plan        
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]        
Percentage of employee based salary permitted for deferral under the plan   50.00%    
Percentage of employee annual bonus permitted for deferral under the plan   90.00%    
Deferred compensation expense adjustment   $ 200 $ 200  
Deferred compensation plan assets   13,900    
Deferred compensation liability   13,700    
Deferred compensation plan | Company owned life insurance policies        
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]        
Deferred compensation plan assets   $ 13,900