Long-Term Debt - Narrative (Details)	9 Months Ended
	Jun. 30, 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	$ 76,000,000
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	$ 49,000,000