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NATURE OF OPERATIONS (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Dec. 31, 2019 USD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2019 USD ($) | Mar. 31, 2020 USD ($) location | Mar. 31, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Number of international locations | location |  |  |  | 4 |
Proceeds from sale of subsidiary |  |  |  | $ 15,056 | $ 0
Gain on sale of subsidiary |  | $ 0 | $ 0 | $ 14,963 | $ 0
TerraVici | Disposed of by Sale |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Percent of outstanding capital stock transferred to the purchaser | 100.00% |  |  |  |
Proceeds from sale of subsidiary | $ 15,100 |  |  |  |
Gain on sale of subsidiary | $ 15,000 |  |  |  |

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