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Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023
Allowance for credit losses |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | $ 237 | $ 59
Additions (Reductions) Charged to Expense | (90) | 194
Additions (Reductions) Charged to Other Accounts | 0 | 0
Deductions | (30) | (16)
Valuation allowances and reserves, ending balance | 117 | 237
Inventory valuation accounts |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 2,164 | 3,337
Additions (Reductions) Charged to Expense | 489 | (304)
Additions (Reductions) Charged to Other Accounts | 0 | 0
Deductions | 80 | (869)
Valuation allowances and reserves, ending balance | 2,733 | 2,164
Inventory LIFO reserve |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 9,634 | 9,940
Additions (Reductions) Charged to Expense | 862 | (306)
Additions (Reductions) Charged to Other Accounts | 0 | 0
Deductions | 0 | 0
Valuation allowances and reserves, ending balance | 10,496 | 9,634
Deferred tax valuation allowance |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 9,112 | 6,977
Additions (Reductions) Charged to Expense | 2,000 | 2,534
Additions (Reductions) Charged to Other Accounts | (212) | (399)
Deductions | 0 | 0
Valuation allowances and reserves, ending balance | 10,900 | 9,112
Workers’ compensation reserve |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 559 | 912
Additions (Reductions) Charged to Expense | (49) | 285
Additions (Reductions) Charged to Other Accounts | 0 | 0
Deductions | (207) | (638)
Valuation allowances and reserves, ending balance | $ 303 | $ 559

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-4 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-4 + Details
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- Definition Amount of decrease in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column D)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-4 + Details
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