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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Changes in the balances of intangible assets (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018
Finite-lived Intangible Assets [Roll Forward] |  |
Amortization of intangible assets begginning balance | $ 3,318 | $ 0
Amortization |  | (165)
Amortization of intangible assets ending balance | 2,873 | 3,318
Seventh Wave Laboratories LLC acquisition [Member] |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Seventh Wave Acquisition |  | 3,483
Trademarks [Member] |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Amortization of intangible assets begginning balance | 1,150 | 0
Amortization | (78) | (20)
Amortization of intangible assets ending balance | 1,072 | 1,150
Trademarks [Member] | Seventh Wave Laboratories LLC acquisition [Member] |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Seventh Wave Acquisition |  | 1,170
Client Relationships [Member] |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Amortization of intangible assets begginning balance | 1,918 | 0
Amortization | (248) | (62)
Amortization of intangible assets ending balance | 1,670 | 1,918
Client Relationships [Member] | Seventh Wave Laboratories LLC acquisition [Member] |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Seventh Wave Acquisition |  | 1,980
Noncompete Agreements [Member] |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Amortization of intangible assets begginning balance | 178 | 0
Amortization | (47) | (12)
Amortization of intangible assets ending balance | 131 | 178
Noncompete Agreements [Member] | Seventh Wave Laboratories LLC acquisition [Member] |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Seventh Wave Acquisition |  | 190
Backlog [Member] |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Amortization of intangible assets begginning balance | 72 | 0
Amortization | (72) | (71)
Amortization of intangible assets ending balance | $ 0 | 72
Backlog [Member] | Seventh Wave Laboratories LLC acquisition [Member] |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Seventh Wave Acquisition |  | $ 143

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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