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COMMON STOCK - Schedule of Shares Reserved for Issuance (Details)	Jun. 30, 2021 shares
Class of Stock [Line Items]
Reserved shares of common stock for issuance ( in shares)	46,183,689
Shares reserved for warrants
Class of Stock [Line Items]
Reserved shares of common stock for issuance ( in shares)	12,809,802
Options issued and outstanding
Class of Stock [Line Items]
Reserved shares of common stock for issuance ( in shares)	10,357,133
Shares available for future issuance under equity incentive plan
Class of Stock [Line Items]
Reserved shares of common stock for issuance ( in shares)	23,016,754

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Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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