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SUBSEQUENT EVENTS, Issuance of Option Grants (Details) - Chief Executive Officer, President and a Director [Member] - Subsequent Event [Member]	Apr. 16, 2021 shares
Nonqualified Stock Option [Member]
Issuance of Option Grants [Abstract]
Number of stock option awards granted (in shares)	2,627,915
Nonqualified Stock Option [Member] | Vest on April 16, 2022 [Member]
Issuance of Option Grants [Abstract]
Number of options expected to vest (in shares)	656,979
Nonqualified Stock Option [Member] | Vest on Sixteenth Day of Each Month from May 2022 through March 2025 [Member]
Issuance of Option Grants [Abstract]
Number of options expected to vest (in shares)	54,748
Nonqualified Stock Option [Member] | Vest on April 16, 2025 [Member]
Issuance of Option Grants [Abstract]
Number of options expected to vest (in shares)	54,756
Milestone Option [Member]
Issuance of Option Grants [Abstract]
Number of stock option awards granted (in shares)	597,253

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Gross number of share options (or share units) granted during the period.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

+ References

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 (e)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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