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INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Sep. 30, 2022
--- | --- | ---
Deferred tax assets: |  |
Pension and postretirement benefits | $ 5,544 | $ 9,051
Accruals and reserves not currently deductible | 11,158 | 10,909
Income tax credit carryforward | 4,970 | 5,796
Operating and capital loss carryforwards | 59,956 | 54,875
Stock options | 8,007 | 7,103
Research and development capitalization | 11,028 | 0
Other | 3,016 | 50
Total deferred tax assets | 103,679 | 87,784
Valuation allowances | (22,506) | (27,552)
Net deferred tax assets | 81,173 | 60,232
Deferred tax liabilities: |  |
Depreciation | (23,547) | (27,317)
Unrealized gains and losses | (2,969) | (2,793)
Goodwill and intangible assets | (97,415) | (98,715)
Revenue recognized over time | (21,226) | (10,847)
Other | (5,002) | (9,539)
Total deferred tax liabilities | (150,159) | (149,211)
Net deferred tax liability | $ (68,986) | $ (88,979)

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