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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, 2021 | Sep. 30, 2020
--- | --- | ---
Deferred tax assets: |  |
Inventories | $ 4,267 | $ 5,007
Pension and other postretirement benefits | 859 | 842
Timing differences related to revenue recognition | 9,365 | 4,936
Lease liabilities | 7,614 | 5,220
Net operating and capital loss carryforwards-domestic | 542 | 563
Net operating loss carryforward - foreign | 4,279 | 3,678
Other compensation-related costs and other cost accruals | 8,174 | 8,953
State credit carryforward | 2,639 | 2,366
Foreign credit carryforward | 192 | 0
Total deferred tax assets | 37,931 | 31,565
Deferred tax liabilities: |  |
ROU assets | (7,614) | (5,220)
Goodwill | (13,746) | (7,878)
Acquisition intangible assets | (62,052) | (52,682)
Depreciation, software amortization | (22,418) | (21,283)
Net deferred tax liabilities before valuation allowance | (67,899) | (55,498)
Less valuation allowance | (2,011) | (1,932)
Net deferred tax liabilities | $ (69,910) | $ (57,430)

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