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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Sep. 30, 2019
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Loss Contingencies [Line Items] |  |
Purchase commitments for equipment, parts and supplies | $ 11.1 |
HPIDC Employee Injury Lawsuit |  |
Loss Contingencies [Line Items] |  |
Accrual for lawsuit settlement |  | $ 9.5

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- Definition Amount of loss contingency liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349 + Details
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- Details
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