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Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Allowance for doubtful accounts |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | $ 249 | $ 592
Additions (Reductions) Charged to Expense | (91) | (80)
Additions (Reductions) Charged to Other Accounts | 0 | 0
Deductions | 9 | (263)
Valuation allowances and reserves, ending balance | 167 | 249
Inventory obsolescence reserve |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 3,676 | 3,335
Additions (Reductions) Charged to Expense | (50) | 518
Additions (Reductions) Charged to Other Accounts | (180) | (151)
Deductions | (2) | (26)
Valuation allowances and reserves, ending balance | 3,444 | 3,676
Inventory LIFO reserve |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 8,286 | 8,296
Additions (Reductions) Charged to Expense | 924 | (10)
Additions (Reductions) Charged to Other Accounts |  | 0
Deductions |  | 0
Valuation allowances and reserves, ending balance | 9,210 | 8,286
Deferred tax valuation allowance |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 5,329 | 7,557
Additions (Reductions) Charged to Expense | 345 | (2,362)
Additions (Reductions) Charged to Other Accounts | (1,033) | 134
Deductions | 0 | 0
Valuation allowances and reserves, ending balance | 4,641 | 5,329
Workers’ compensation reserve |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 546 | 181
Additions (Reductions) Charged to Expense | 1,241 | 703
Additions (Reductions) Charged to Other Accounts | (53) | 0
Deductions | (846) | (338)
Valuation allowances and reserves, ending balance | $ 888 | $ 546

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column D)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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