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Accrued Liabilities (Accrued Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Sep. 30, 2016 | Dec. 31, 2015 | Sep. 30, 2015
--- | --- | --- | --- | ---
Salaries and other member benefits | $ 47,677 | $ 87,197 |  |
Warranties | 15,528 | 15,993 | $ 13,370 | $ 13,741
Interest payable | 5,789 | 9,071 |  |
Current portion of acquired performance obligations and unfavorable contracts | 2,910 | 2,910 |  |
Accrued retirement benefits | 2,503 | 2,505 |  |
Current portion of deferred income from JV formation (Note 4) | 6,452 | 6,552 |  |
Deferred revenues | 7,577 | 5,779 |  |
Taxes, other than income | 9,289 | 14,580 |  |
Other | 16,258 | 10,200 |  |
Accrued liabilities | 115,823 | 156,627 |  |
Loss Reserve On Contractual Lease Commitments [Member] |  |  |  |
Current portion of loss reserve | $ 1,840 | $ 1,840 |  |

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