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v3.23.1

Summary of Significant Accounting Policies - Financial Instruments Measured at Fair Value (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Jul. 15, 2020
--- | --- | --- | --- | ---
Liabilities: |  |  |  |
Warrant liability | $ 256 | $ 3,605 | $ 1,614 | $ 2,486
Fair Value, Recurring |  |  |  |
Liabilities: |  |  |  |
Warrant liability | 256 | 3,605 |  |
Total | 256 | 3,605 |  |
Fair Value, Recurring | Level 1 |  |  |  |
Liabilities: |  |  |  |
Warrant liability | 0 | 0 |  |
Total | 0 | 0 |  |
Fair Value, Recurring | Level 2 |  |  |  |
Liabilities: |  |  |  |
Warrant liability | 256 | 3,605 |  |
Total | 256 | 3,605 |  |
Fair Value, Recurring | Level 3 |  |  |  |
Liabilities: |  |  |  |
Warrant liability | 0 | 0 |  |
Total | $ 0 | $ 0 |  |

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- Definition Fair value of financial and nonfinancial obligations. + 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 https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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