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Financial Instruments - Changes in fair value of outstanding warrant and tranche liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Warrant liabilities |  |
Fair Value, liabilities measured on recurring basis, unobservable input reconciliation |  |
Beginning balance | $ 391 | $ 3,399
Change in Unrealized (Gains) Losses | (22) | 379
Issuances (Settlements) |  | (3,387)
Ending balance | 369 | 391
Issuances |  | 3,397
Settlements |  | 10
Put option liability |  |
Fair Value, liabilities measured on recurring basis, unobservable input reconciliation |  |
Beginning balance |  | 5,140
Change in Unrealized (Gains) Losses |  | 70
Issuances (Settlements) |  | $ (5,210)
Series B-2 tranche liabilities |  |
Fair Value, liabilities measured on recurring basis, unobservable input reconciliation |  |
Beginning balance |  |
Change in Unrealized (Gains) Losses | (1,645) |
Issuances (Settlements) | 6,347 |
Ending balance | 4,702 |
Series B-3 warrant liabilities |  |
Fair Value, liabilities measured on recurring basis, unobservable input reconciliation |  |
Beginning balance |  |
Change in Unrealized (Gains) Losses | 3,853 |
Issuances (Settlements) | 11,966 |
Ending balance | $ 15,819 |

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of issuances 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 -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of purchases, (sales), issuances and (settlements) 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 -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of settlements 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 -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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