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14. Fair Value Disclosures (Details - Changes to fair value measurement Level 3) - Liability [Member] - Fair Value, Inputs, Level 3 [Member] - Fair Value, Recurring [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Series A Embedded Derivative Liability [Member] |  |
Derivative liability, beginning balance | $ 17,974 | $ 0
Issuance of warrants | 0 | 21,232
Remeasurement to fair value | 8,754 | (3,258)
Derviative liability, ending balance | 26,728 | 17,974
Series B Warrants Liability [Member] |  |
Derivative liability, beginning balance | 0 | 0
Issuance of warrants | 4,600 | 0
Remeasurement to fair value | 47,741 | 0
Derviative liability, ending balance | $ 52,341 | $ 0

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