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Long-Term Debt (Details) - U.S. Revolver
12 Months Ended
Sep. 30, 2025
USD ($)
Oct. 04, 2023
USD ($)
Oct. 03, 2023
USD ($)
Credit Agreement Second Amendment      
Line of Credit Facility [Line Items]      
Revolving credit facility     $ 125,000,000
Credit Agreement Third Amendment      
Line of Credit Facility [Line Items]      
Revolving credit facility   $ 150,000,000.0  
Readily available cash deductible from letters of credit outstanding (lesser of)   $ 60,000,000.0  
Readily available cash percentage deductible from letters of credit (lesser of)   60.00%  
Credit Agreement Third Amendment | Bank of America      
Line of Credit Facility [Line Items]      
Revolving credit facility   $ 100,000,000  
Credit Agreement Third Amendment | Texas Capital Bank      
Line of Credit Facility [Line Items]      
Revolving credit facility   $ 50,000,000  
Credit Agreement Fourth Amendment      
Line of Credit Facility [Line Items]      
Pledged asset percentage 65.00%    
Amended and Restated Credit Agreement      
Line of Credit Facility [Line Items]      
Revolving credit facility borrowings, outstanding amount $ 0    
Amount of credit facility remaining borrowing capacity $ 72,500,000    
Debt covenant, consolidated leverage ratio (less than) 3.0    
Debt covenant, consolidated interest coverage ratio (greater than) 3.0    
Cash collateral pledged balance $ 60,000,000    
Percentage of voting capital stock pledged as collateral 100.00%    
Non-domestic subsidiaries of voting capital stock 65.00%    
Amended and Restated Credit Agreement | Federal Funds Rate      
Line of Credit Facility [Line Items]      
Basis spread on variable rate 0.50%    
Amended and Restated Credit Agreement | Bloomberg Short-Term Bank Yield Index      
Line of Credit Facility [Line Items]      
Basis spread on variable rate 1.00%    
Amended and Restated Credit Agreement | Base Rate | Minimum      
Line of Credit Facility [Line Items]      
Basis spread on variable rate 0.00%    
Amended and Restated Credit Agreement | Base Rate | Maximum      
Line of Credit Facility [Line Items]      
Basis spread on variable rate 2.00%    
Amended and Restated Credit Agreement | Financial Standby Letter of Credit      
Line of Credit Facility [Line Items]      
Guarantee liability, letters of credit $ 77,500,000