GOODWILL AND OTHER INTANGIBLES (Details) - USD ($)	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Goodwill [Line Items]
Goodwill, impairment loss	$ 0	$ 0	$ 0
Reallocation of goodwill		0
Amortization expense	9,590,000	9,922,000	$ 9,070,000
Amortization expense estimated for 2021	9,443,000
Amortization expense estimated for 2022	9,436,000
Amortization expense estimated for 2023	9,357,000
Amortization expense estimated for 2024	9,331,000
Amortization expense estimated for 2025	9,331,000
Amortization expense estimated thereafter	$ 83,490,000
Consumer and Professional Products
Goodwill [Line Items]
Reallocation of goodwill		(148,076,000)
Home and Building Products (HBP)
Goodwill [Line Items]
Reallocation of goodwill		$ 148,076,000
Accounting Standards Update 2017-04
Goodwill [Line Items]
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201704Member