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v3.23.2

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 |  |  |

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