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9. FAIR VALUE MEASUREMENTS (Details - Fair Value on a Recurring Basis) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of assets	$ 122,469	$ 109,103
Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Fair value of assets	122,469	109,103
Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Warrant Investment [Member]
Fair value of assets		0
Assets [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of assets	57,851	2,752
Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Fair value of assets	57,851	0
Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Warrant Investment [Member]
Fair value of assets		2,752
Assets [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of assets	0	0
Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Fair value of assets	0	0
Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Warrant Investment [Member]
Fair value of assets		0
Liability [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of assets	0	0
Liability [Member] | Fair Value, Inputs, Level 1 [Member] | Series A Warrants [Member]
Fair value of assets	0	0
Liability [Member] | Fair Value, Inputs, Level 1 [Member] | Series B Warrants [Member]
Fair value of assets	0	0
Liability [Member] | Fair Value, Inputs, Level 1 [Member] | Embedded Derivative Liability [Member]
Fair value of assets	0	0
Liability [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of assets	0	6,640
Liability [Member] | Fair Value, Inputs, Level 2 [Member] | Series A Warrants [Member]
Fair value of assets	0	6,640
Liability [Member] | Fair Value, Inputs, Level 2 [Member] | Series B Warrants [Member]
Fair value of assets	0	0
Liability [Member] | Fair Value, Inputs, Level 2 [Member] | Embedded Derivative Liability [Member]
Fair value of assets	0	0
Liability [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of assets	284,618	79,069
Liability [Member] | Fair Value, Inputs, Level 3 [Member] | Series A Warrants [Member]
Fair value of assets	18,243	0
Liability [Member] | Fair Value, Inputs, Level 3 [Member] | Series B Warrants [Member]
Fair value of assets	225,956	52,341
Liability [Member] | Fair Value, Inputs, Level 3 [Member] | Embedded Derivative Liability [Member]
Fair value of assets	$ 40,419	$ 26,728

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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

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