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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