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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018
Trade Receivables and Allowance for Doubtful Accounts [Abstract] |  |  |
Period past due for which a finance charge may be applied | 30 |  |
Research and Development Expenses [Abstract] |  |  |
Research and development costs | $ 22,289 | $ 26,176 | $ 24,984
Minimum |  |  |
Goodwill and Other Intangible Assets [Abstract] |  |  |
Useful lives of intangibles | 2 years |  |
Maximum |  |  |
Goodwill and Other Intangible Assets [Abstract] |  |  |
Useful lives of intangibles | 15 years |  |
Buildings | Minimum |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Useful lives of PPE | 10 years |  |
Buildings | Maximum |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Useful lives of PPE | 45 years |  |
Machinery, equipment and other | Minimum |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Useful lives of PPE | 3 years |  |
Machinery, equipment and other | Maximum |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Useful lives of PPE | 12 years |  |

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 + Details
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