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Asset Held for Sale and Disposal (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Dec. 15, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Sep. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Assets held for sale |  | $ 670 |  | $ 670 |  | $ 2,524
Loss (gain) on disposal or impairment of operating assets |  | 357 | $ 4,369 | (1,071) | $ 4,363 |
Proceeds from sale of machinery and equipment |  |  |  | 523 |  |
Cork Ireland Building |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Assets held for sale |  |  |  |  |  | 1,447
Alliance Building and Machinery |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Assets held for sale |  | $ 90 |  | $ 90 |  | $ 1,077
Disposal Group, Held-for-sale | Cork, Ireland and Alliance building and machinery and equipment |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Cash proceeds from sale of Cork, Ireland and Alliance building | $ 3,078 |  |  |  |  |
Gain on disposal of Cork, Ireland and Alliance building | 1,545 |  |  |  |  |
Cash proceeds, net of legal and professional fees | $ 2,447 |  |  |  |  |

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