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STOCK-BASED COMPENSATION (Details) - 2009 Stock Plan - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance under the plan		55,305,506	55,305,506
Exercise price as a percentage of fair value		100.00%
Exercise price as a percentage of fair value for shareholders owning specified minimum amount		110.00%
Significant shareholder threshold used for determining exercise price		10.00%
Number of years for monthly vesting		3 years
Exercise period	10 years	10 years

X

- Definition

The period of time over which a monthly vesting schedule is used.

+ References

No definition available.

+ Details

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X

- Definition

The exercise price for a share based compensation award as a percent of fair value to be used as a minimum for shareholders owning a specified amount of shares outstanding.

+ References

No definition available.

+ Details

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X

- Definition

The ownership threshold used to determine if a recipient of a share based compensation award uses a different percentage of fair value for exercise price of awards.

+ References

No definition available.

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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X

- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ 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 (a)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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X

- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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 (a)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

+ References

No definition available.

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