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Retirement Benefit Plans - Net Plan Assets Recognized in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Sep. 30, 2016
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Reconciliation of funded status: |  |
Plans in which Benefit Obligations Exceed Assets at September 30, | $ (6,230) | $ (8,387)
Amounts recognized in accumulated other comprehensive loss: |  |
Net loss, Plans in which Benefit Obligations Exceed Assets | 8,406 | 10,926
Net amount recognized in the consolidated balance sheets, Plans in which Benefit Obligations Exceed Assets | 2,176 | 2,539
Amounts recognized in the consolidated balance sheets are: |  |
Plans in which Benefit Obligations Exceed Assets at September 30, | (6,230) | (8,387)
Accumulated other comprehensive loss pretax, Plans in which Benefit Obligations Exceed Assets | 8,406 | 10,926
Accrued liabilities |  |
Reconciliation of funded status: |  |
Plans in which Benefit Obligations Exceed Assets at September 30, | (46) | (46)
Amounts recognized in the consolidated balance sheets are: |  |
Plans in which Benefit Obligations Exceed Assets at September 30, | (46) | (46)
Pension liability |  |
Reconciliation of funded status: |  |
Plans in which Benefit Obligations Exceed Assets at September 30, | (6,184) | (8,341)
Amounts recognized in the consolidated balance sheets are: |  |
Plans in which Benefit Obligations Exceed Assets at September 30, | $ (6,184) | $ (8,341)

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- Definition Defined benefit plans with benefit obligations in excess of plan assets aggregate benefit obligation accumulated other comprehensive income before tax. + References No definition available. + Details
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- Definition Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of benefit obligation for defined benefit plan with benefit obligation in excess of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2417-114920 + Details
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