BUSINESS SEGMENTS - Depreciation, Amortization and Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	$ 15,806	$ 15,523	$ 46,955	$ 47,067
CAPITAL EXPENDITURES	9,903	12,232	33,889	34,751
Operating Segments
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	15,657	15,370	46,606	46,611
CAPITAL EXPENDITURES	9,877	12,207	33,861	34,444
Corporate
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	149	153	349	456
CAPITAL EXPENDITURES	26	25	28	307
Consumer and Professional Products \| Operating Segments
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	8,781	8,197	25,600	24,650
CAPITAL EXPENDITURES	5,365	7,029	19,085	14,561
Home and Building Products \| Operating Segments
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	4,375	4,507	13,095	13,975
CAPITAL EXPENDITURES	1,723	3,640	5,836	15,135
Defense Electronics \| Operating Segments
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	2,501	2,666	7,911	7,986
CAPITAL EXPENDITURES	$ 2,789	$ 1,538	$ 8,940	$ 4,748

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

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