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Debt - Long-Term Debt (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Sep. 30, 2021
--- | --- | ---
Debt Instrument [Line Items] |  |
Total debt | $ 836,062 | $ 763,710
Finance lease obligations | 8,145 | 9,177
Less current maturities | (4,271) | (4,624)
Long-term debt | 831,791 | 759,086
2025 Senior Notes |  |
Debt Instrument [Line Items] |  |
Total debt | 297,931 | 297,796
Other borrowings |  |
Debt Instrument [Line Items] |  |
Total debt | 20,296 | 10,150
Revolving Credit Facility | Line of Credit |  |
Debt Instrument [Line Items] |  |
Total debt | 405,000 | 350,597
Securitization Facility |  |
Debt Instrument [Line Items] |  |
Total debt | $ 104,690 | $ 95,990

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