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9. FAIR VALUE MEASUREMENTS (Details - Changes to fair value measurement Level 3) - Liability [Member] - Fair Value, Inputs, Level 3 [Member] - Fair Value, Recurring [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Series A Warrants Liability [Member]
Derivative liability, beginning balance	$ 0
Transfers into Level 3	6,640
Remeasurement to fair value	11,603
Derviative liability, ending balance	18,243
Series A Embedded Derivative Liability [Member]
Derivative liability, beginning balance	26,728
Transfers into Level 3	0
Remeasurement to fair value	13,691
Derviative liability, ending balance	40,419
Series B Warrants Liability [Member]
Derivative liability, beginning balance	52,341
Transfers into Level 3	0
Remeasurement to fair value	173,615
Derviative liability, ending balance	$ 225,956

X

- Definition

Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.

+ 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 (c)(3)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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X

- Definition

Amount of increase (decrease) of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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