STOCK-BASED COMPENSATION, Assumptions (Details)	6 Months Ended
Mar. 31, 2019 $ / shares
Indco [Member]
Share-based Payment Award, Fair Value Assumptions [Abstract]
Risk-free Interest Rate	2.78%
Dividend Yield	0.00%
Weighted Average Grant Date Fair Value (in dollars per share)	$ 12.07
Indco [Member] \| Minimum [Member]
Share-based Payment Award, Fair Value Assumptions [Abstract]
Expected Option Term in Years	4 years 7 days
Expected Volatility	98.50%
Indco [Member] \| Maximum [Member]
Share-based Payment Award, Fair Value Assumptions [Abstract]
Expected Option Term in Years	6 years 3 months 7 days
Expected Volatility	102.90%
Employee Option Awards [Member]
Share-based Payment Award, Fair Value Assumptions [Abstract]
Risk-free Interest Rate	3.04%
Dividend Yield	0.00%
Weighted Average Grant Date Fair Value (in dollars per share)	$ 7.75
Employee Option Awards [Member] \| Minimum [Member]
Share-based Payment Award, Fair Value Assumptions [Abstract]
Expected Option Term in Years	5 years 6 months
Expected Volatility	95.40%
Employee Option Awards [Member] \| Maximum [Member]
Share-based Payment Award, Fair Value Assumptions [Abstract]
Expected Option Term in Years	6 years 6 months
Expected Volatility	98.80%
Non-Employee Option Awards [Member]
Share-based Payment Award, Fair Value Assumptions [Abstract]
Risk-free Interest Rate	2.31%
Expected Volatility	96.39%
Dividend Yield	0.00%
Non-Employee Option Awards [Member] \| Minimum [Member]
Share-based Payment Award, Fair Value Assumptions [Abstract]
Expected Option Term in Years	7 years 6 months
Weighted Average Grant Date Fair Value (in dollars per share)	$ 4.13
Non-Employee Option Awards [Member] \| Maximum [Member]
Share-based Payment Award, Fair Value Assumptions [Abstract]
Expected Option Term in Years	8 years 4 months 24 days
Weighted Average Grant Date Fair Value (in dollars per share)	$ 8.04

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

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