GOODWILL AND OTHER INTANGIBLES (Details) - Summary of Changes in Carrying Value of Goodwill $ in Thousands	9 Months Ended
Jun. 30, 2019 USD ($)
Goodwill [Roll Forward]
September 30, 2018	$ 439,395
Goodwill from acquisitions	300
Other adjustments including currency translations	(1,278)
June 30, 2019	438,417
Home & Building Products [Member]
Goodwill [Roll Forward]
September 30, 2018	420,850
Goodwill from acquisitions	300
Other adjustments including currency translations	(1,278)
June 30, 2019	419,872
Telephonics [Member]
Goodwill [Roll Forward]
September 30, 2018	18,545
Goodwill from acquisitions	0
Other adjustments including currency translations	0
June 30, 2019	$ 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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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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.

+ References

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-SubTopic 20
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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