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INCOME TAXES - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Sep. 30, 2024
--- | --- | ---
Deferred tax assets: |  |
Bad debt reserves | $ 2,103 | $ 2,491
Inventory reserves | 8,219 | 7,086
Deferred compensation (equity compensation and defined benefit plans) | 6,739 | 7,036
Compensation benefits | 6,121 | 5,052
Insurance reserve | 1,918 | 2,411
Restructuring reserve | 826 | 2,616
Warranty reserve | 4,392 | 5,130
Lease liabilities | 46,454 | 47,824
Net operating loss | 27,750 | 25,299
Tax credits | 5,933 | 5,933
Research & development | 10,329 | 4,510
Other reserves and accruals | 5,160 | 5,167
Deferred tax assets, gross | 125,944 | 120,555
Valuation allowance | (30,703) | (26,989)
Total deferred tax assets | 95,241 | 93,566
Deferred tax liabilities: |  |
Goodwill and intangibles | (99,174) | (126,523)
Property, plant and equipment | (19,872) | (19,903)
Right-of-use assets | (43,498) | (45,112)
Unremitted foreign earnings | (1,514) | (1,896)
Other | (1,068) | (723)
Total deferred tax liabilities | (165,126) | (194,157)
Net deferred tax liabilities | $ (69,885) | $ (100,591)

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