REPORTABLE SEGMENTS (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2019 segment	Sep. 30, 2018	Sep. 30, 2017	Nov. 16, 2017 USD ($)	Nov. 15, 2017 USD ($)
REPORTABLE SEGMENTS (Details) [Line Items]
Number of Reportable Segments | segment	3
Discontinued Operations, Held-for-sale [Member] | Plastics [Member]
REPORTABLE SEGMENTS (Details) [Line Items]
Disposal group, including discontinued operation, consideration | $				$ 465,000	$ 465,000
Home Depot [Member] | Consumer And Professional Products Segment [Member]
REPORTABLE SEGMENTS (Details) [Line Items]
Concentration risk, percentage	28.00%	29.00%	28.00%
Home Depot [Member] | Home and Building Products (HBP) [Member]
REPORTABLE SEGMENTS (Details) [Line Items]
Concentration risk, percentage	13.00%	16.00%	18.00%
United States Government [Member] | Defense Electronics Segment [Member]
REPORTABLE SEGMENTS (Details) [Line Items]
Concentration risk, percentage	10.00%	10.00%	18.00%