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Income Tax Expense - Tax Effects Of Temporary Differences That Give Rise To Significant Portions Of The Deferred Tax Assets And Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Sep. 30, 2023
--- | --- | ---
Deferred tax assets: |  |
Inventories | $ 4,577 | $ 5,457
Pension and other postretirement benefits | 460 | 658
Capitalized research and development expenditures | 9,726 | 4,114
Lease liabilities | 7,451 | 9,822
Net operating and capital loss carryforwards - domestic | 544 | 553
Net operating loss carryforward - foreign | 3,855 | 3,714
Other compensation-related costs and other cost accruals | 10,305 | 8,691
State credit carryforward | 1,601 | 2,249
Total deferred tax assets | 38,519 | 35,258
Deferred tax liabilities: |  |
ROU assets | (6,895) | (9,822)
Goodwill | (15,416) | (13,313)
Acquisition intangible assets | (66,986) | (61,187)
Depreciation, software amortization | (19,892) | (21,772)
Net deferred tax liabilities before valuation allowance | (70,670) | (70,836)
Less valuation allowance | (1,513) | (1,772)
Net deferred tax liabilities | $ (72,183) | $ (72,608)

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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