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Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Aug. 06, 2021 | Jul. 15, 2019
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants issued (in shares) |  |  |  |  | 2,000,000
Fair value of warrants issued | $ 5,874 | $ 5,874 |  |  |
Class of warrant or right, warrants exercised (in shares) |  | 0 | 0 |  |
Exercise price of warrants (in usd per share) |  |  |  |  | $ 0.001
Pre-Funded Warrants |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants issued (in shares) | 4,000,000 |  |  |  |
Common Stock Warrants |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants issued (in shares) | 8,850,000 |  |  |  |
Maximum | Common Stock Warrants |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Exercise price of warrants (in usd per share) | $ 1.09 |  |  |  |
Minimum | Common Stock Warrants |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Exercise price of warrants (in usd per share) | $ 0.96 |  |  |  |
Senior Secured Notes Due 2025 |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants issued (in shares) |  |  |  | 714,000 |
Fair value of warrants issued |  | $ 6,800 |  |  |
Interest rate |  | 12.50% |  |  |
Senior Secured Notes Due 2025 | Senior Notes |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Interest rate |  | 12.50% |  |  | 12.50%
2020 Additional Notes |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Fair value of warrants issued |  | $ 735 |  |  |
Senior Secured Notes Due 2025 - First Additional Offering | Maximum |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants issued (in shares) |  | 2,143,000 |  |  |

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
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