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Retirement Benefit Plans - Amounts in Accumulated Other Comprehensive Loss Expected to be Recognized as Components of Net Periodic Benefit Costs (Details) $ in Thousands | 12 Months Ended
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Sep. 30, 2019 USD ($)
Defined Benefit Plan, Expected Amortization, Next Fiscal Year [Abstract] |
Net loss, plans in which assets exceed benefit obligations | $ 0
Net loss, plans in which benefit obligations exceed assets | $ 755

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- Definition Defined Benefit Plan, Future Amortization of Gain (Loss), Plans Which Assets Exceed Benefit Obligations + References No definition available. + Details
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- Definition Defined Benefit Plan, Future Amortization of Gain (Loss), Plans Which Benefit Obligations Exceed Plan Assets + References No definition available. + Details
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- References No definition available. + Details
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