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CONVERTIBLE NOTES (Fair Value Income Approach) (Details) - Fair Value, Inputs, Level 3	Sep. 30, 2021 Y $ / shares	Aug. 25, 2021 Y $ / shares
2021 Notes | Share Price
Debt Instrument, Measurement Input | $ / shares	1.33	1.34
2021 Notes | Expected term
Debt Instrument, Measurement Input | Y	0.13	0.23
2021 Notes | Risk free rate
Debt Instrument, Measurement Input	0.04	0.05
2021 Notes | Volatility
Debt Instrument, Measurement Input	81.16	78.95
2021 Notes | Yield
Debt Instrument, Measurement Input	6.74	7.87
2024 Notes | Share Price
Debt Instrument, Measurement Input | $ / shares	1.33	1.34
2024 Notes | Expected term
Debt Instrument, Measurement Input | Y	2.92	3.03
2024 Notes | Risk free rate
Debt Instrument, Measurement Input	0.50	0.44
2024 Notes | Volatility
Debt Instrument, Measurement Input	91.77	91.35
2024 Notes | Yield
Debt Instrument, Measurement Input	8.99	7.66

X

- Definition

Value of input used to measure debt instrument, including, but not limited to, convertible and non-convertible debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

+ Details

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