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)