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INCOME TAXES (Details) - Schedule of deferred tax assets and liabilities - USD ($) $ in Thousands | Sep. 30, 2018 | Sep. 30, 2017
--- | --- | ---
Deferred tax assets: |  |
Bad debt reserves | $ 1,404 | $ 2,509
Inventory reserves | 7,709 | 7,615
Deferred compensation (equity compensation and defined benefit plans) | 11,437 | 27,430
Compensation benefits | 5,434 | 6,111
Insurance reserve | 1,782 | 2,985
Restructuring reserve | 0 | 29
Warranty reserve | 2,598 | 2,893
Net operating loss | 10,593 | 37,383
Tax credits | 6,379 | 1,866
Other reserves and accruals | 5,433 | 7,658
Deferred Tax Assets, Gross | 52,769 | 96,479
Valuation allowance | (8,520) | (17,466)
Total deferred tax assets | 44,249 | 79,013
Deferred tax liabilities: |  |
Deferred income | 0 | (1,862)
Goodwill and intangibles | (44,402) | (70,560)
Property, plant and equipment | (39,260) | (51,488)
Deferred gain on assets held for sale | 0 | (16,300)
Other | (1,086) | (1,016)
Total deferred tax liabilities | (84,748) | (141,226)
Net deferred liability | $ (40,499) | $ (62,213)

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