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Indebtedness (Tables) | 6 Months Ended
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Mar. 31, 2018
Debt Disclosure [Abstract] |
Components of Long-term debt | Long-term debt consists of:
|  | March 31, 2018 |  | September 30, 2017
U.S. revolving credit facility |  | $ | 480,000 |  |  | $ | 540,110 |
Senior notes |  | 300,000 |  |  | 300,000 |
Securitization program |  | 130,000 |  |  | 120,000 |
Obligations under capital leases |  | 238 |  |  | 306 |
Senior debt |  | 910,238 |  |  | 960,416 |
Less deferred debt issuance cost |  | (2,571 | ) |  | (3,468 | )
Less current installments |  | (238 | ) |  | (295 | )
Long-term debt |  | $ | 907,429 |  |  | $ | 956,653 |

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