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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, 2022 | Sep. 30, 2021
--- | --- | ---
Deferred tax assets: |  |
Inventories | $ 4,990 | $ 4,267
Pension and other postretirement benefits | 664 | 859
Timing differences related to revenue recognition | 61 | 9,365
Lease liabilities | 7,073 | 7,614
Net operating and capital loss carryforwards-domestic | 575 | 542
Net operating loss carryforward - foreign | 3,396 | 4,279
Other compensation-related costs and other cost accruals | 9,032 | 8,174
State credit carryforward | 1,676 | 2,639
Foreign credit carryforward | 203 | 192
Total deferred tax assets | 27,670 | 37,931
Deferred tax liabilities: |  |
ROU assets | (7,073) | (7,614)
Goodwill | (11,691) | (13,746)
Acquisition intangible assets | (62,051) | (62,052)
Depreciation, software amortization | (24,503) | (22,418)
Net deferred tax liabilities before valuation allowance | (77,648) | (67,899)
Less valuation allowance | (1,208) | (2,011)
Net deferred tax liabilities | $ (78,856) | $ (69,910)

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