GOODWILL AND OTHER INTANGIBLES (Details) - Summary of changes in carrying value of goodwill - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2019	Sep. 30, 2018
Goodwill [Roll Forward]
Goodwill	$ 439,395	$ 319,139
Goodwill from acquisitions	300	119,907
Reallocation of Goodwill	0
Foreign currency translation adjustments	(2,628)	349
Goodwill	437,067	439,395
Consumer And Professional Products Segment [Member]
Goodwill [Roll Forward]
Goodwill	378,046	300,594
Goodwill from acquisitions	0	77,024
Reallocation of Goodwill	(148,076)
Foreign currency translation adjustments	(2,701)	428
Goodwill	227,269	378,046
Home and Building Products (HBP) [Member]
Goodwill [Roll Forward]
Goodwill	42,804	0
Goodwill from acquisitions	300	42,883
Reallocation of Goodwill	148,076
Foreign currency translation adjustments	73	(79)
Goodwill	191,253	42,804
Defense Electronics Segment [Member]
Goodwill [Roll Forward]
Goodwill	18,545	18,545
Goodwill from acquisitions	0	0
Reallocation of Goodwill	0
Foreign currency translation adjustments	0	0
Goodwill	$ 18,545	$ 18,545

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of transfers into (out of) an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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