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Fair Value Measurements. (Details) - Schedule of fair values of warrants based on unobservable inputs $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($)
Warrants to Senior Noteholders [Member] |
Fair Value Measurements. (Details) - Schedule of fair values of warrants based on unobservable inputs [Line Items] |
Beginning balance | $ 977
Issuance of warrants in October 2020 offering |
Exercise of warrants/reclass to equity in 2020 | (8,474)
Adjustments to fair value for 2020 | 7,497
Ending balance |
Pre-funded Warrants [Member] |
Fair Value Measurements. (Details) - Schedule of fair values of warrants based on unobservable inputs [Line Items] |
Beginning balance |
Issuance of warrants in October 2020 offering | 23,638
Exercise of warrants/reclass to equity in 2020 | (21,917)
Adjustments to fair value for 2020 | (1,721)
Ending balance |
Other Warrants [Member] |
Fair Value Measurements. (Details) - Schedule of fair values of warrants based on unobservable inputs [Line Items] |
Beginning balance |
Issuance of warrants in October 2020 offering | 27,048
Exercise of warrants/reclass to equity in 2020 | (31,231)
Adjustments to fair value for 2020 | 4,183
Ending balance |

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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 + Details
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