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Retirement Benefit Plans - Narrative (Details) - USD ($) | 6 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Retirement Benefits [Abstract] |  |
Cash contribution | $ 95,000 | $ 18,000
Non-cash contribution | 0 | $ 86,000
Additional cash contributions planned for fiscal 2025 | $ 187,000 |

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- Definition Defined Benefit Plan, Plan Assets, Cash Contribution + References No definition available. + Details
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- Definition Defined Benefit Plan, Plan Assets, Non Cash Contribution + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount of contributions received and expected to be received by defined benefit plan from employer in current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-18 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-6 + Details
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