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Long-Term Debt - Narrative (Details)
6 Months Ended
Mar. 31, 2023
USD ($)
Mar. 30, 2023
USD ($)
Oct. 01, 2021
USD ($)
Oct. 31, 2001
USD ($)
Industrial Development Revenue Bonds        
Line Of Credit Facility [Line Items]        
Borrowings       $ 8,000,000
Final annual payment     $ 400,000  
U.S. Revolver | Revolving Credit Facility        
Line Of Credit Facility [Line Items]        
Revolving credit facility $ 125,000,000 $ 75,000,000    
Cash collateral pledged balance 50,000,000      
Letters of credit collateral amount, minimum outstanding 0      
Revolving credit facility borrowings, outstanding amount 0      
Amount available under the credit facility $ 80,200,000      
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%      
U.S. Revolver | Revolving Credit Facility | Fed Funds Rate        
Line Of Credit Facility [Line Items]        
Basis spread on variable rate 0.50%      
U.S. Revolver | Revolving Credit Facility | Bloomberg Short-Term Bank Yield Index (BSBY)        
Line Of Credit Facility [Line Items]        
Basis spread on variable rate 1.00%      
U.S. Revolver | Revolving Credit Facility | Base Rate | Minimum        
Line Of Credit Facility [Line Items]        
Basis spread on variable rate 0.00%      
U.S. Revolver | Revolving Credit Facility | Base Rate | Maximum        
Line Of Credit Facility [Line Items]        
Basis spread on variable rate 2.00%      
U.S. Revolver | Revolving Credit Facility | Financial Standby Letter of Credit        
Line Of Credit Facility [Line Items]        
Guarantee liability $ 44,800,000