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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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Disposal Group, Not Discontinued Operation, Subsidiary Or Equity Method Investee, Ownership Interest Sold

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Amount of gain (loss) on sale or disposal of equity in securities of subsidiaries or equity method investee.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(b)(9)(a))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
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-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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-Topic 220
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-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
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