BUSINESS SEGMENTS - Depreciation, Amortization And Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Segment depreciation and amortization	$ 15,595	$ 14,047	$ 46,172	$ 40,318
CAPITAL EXPENDITURES	10,376	11,520	27,794	33,148
Home And Building Products [Member]
Segment Reporting Information [Line Items]
Segment depreciation and amortization	12,784	11,251	37,831	31,888
CAPITAL EXPENDITURES	8,275	9,761	21,750	24,611
Telephonics [Member]
Segment Reporting Information [Line Items]
Segment depreciation and amortization	2,669	2,676	7,926	8,090
CAPITAL EXPENDITURES	2,064	1,632	5,797	6,017
Operating Segments [Member]
Segment Reporting Information [Line Items]
Segment depreciation and amortization	15,453	13,927	45,757	39,978
CAPITAL EXPENDITURES	10,339	11,393	27,547	30,628
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Segment depreciation and amortization	142	120	415	340
CAPITAL EXPENDITURES	$ 37	$ 127	$ 247	$ 2,520

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=115929826&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=109223946&loc=d3e3602-108585

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- Definition

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=109223946&loc=d3e3213-108585

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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