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Long-Term Debt - Narrative (Details)
12 Months Ended
Sep. 30, 2022
USD ($)
Oct. 01, 2021
USD ($)
Sep. 30, 2021
USD ($)
Oct. 31, 2001
USD ($)
Line of Credit Facility [Line Items]        
Revolving credit facility borrowings, outstanding amount $ 0   $ 400,000  
Industrial Development Revenue Bonds        
Line of Credit Facility [Line Items]        
Borrowings       $ 8,000,000
Final annual redemption   $ 400,000    
Amended And Restated Credit Agreement | U.S. Revolver        
Line of Credit Facility [Line Items]        
Revolving credit facility 75,000,000      
Cash collateral pledged balance 30,000,000      
Letters of credit, collateral outstanding (not to be less than) 0      
Revolving credit facility borrowings, outstanding amount 0      
Amount of credit facility remaining borrowing capacity $ 38,300,000      
Debt covenant, consolidated leverage ratio (less than) 3.0      
Debt covenant, consolidated interest coverage ratio (greater than) 3.0      
Percentage of voting capital stock pledged as collateral 100.00%      
Non-domestic subsidiaries of voting capital stock 65.00%      
Amended And Restated Credit Agreement | U.S. Revolver | Federal Funds Rate        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 0.50%      
Amended And Restated Credit Agreement | U.S. Revolver | Eurocurrency Rate | Maximum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 1.75%      
Amended And Restated Credit Agreement | U.S. Revolver | LIBOR        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 1.00%      
Amended And Restated Credit Agreement | U.S. Revolver | Base Rate | Minimum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate (0.25%)      
Amended And Restated Credit Agreement | U.S. Revolver | Financial Standby Letter of Credit        
Line of Credit Facility [Line Items]        
Guarantee liability, letters of credit $ 36,700,000