MARKET SECTORS AND MAJOR CUSTOMERS - Narrative (Details) - customer	12 Months Ended
Sep. 30, 2020	Sep. 30, 2019
Sales \| Aerospace and Defense
Concentration Risk [Line Items]
Concentration Risk, Customer	Two
Customer Concentration Risk \| Sales
Concentration Risk [Line Items]
Concentration risk, number of customers	3	1
Customer Concentration Risk \| Sales \| Medical \| Customer Three
Concentration Risk [Line Items]
Concentration risk, percentage	17.00%
Customer Concentration Risk \| Sales \| Aerospace and Defense
Concentration Risk [Line Items]
Concentration risk, percentage		23.00%
Customer Concentration Risk \| Sales \| Aerospace and Defense \| Customer One
Concentration Risk [Line Items]
Concentration risk, percentage	27.00%
Customer Concentration Risk \| Sales \| Aerospace and Defense \| Customer Two
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%
Customer Concentration Risk \| Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, number of customers	2	2
Concentration risk, percentage	30.00%	38.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13537-108611

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration