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Organization - Additional Information (Details) - USD ($) $ in Thousands | Jul. 17, 2024 | Jan. 31, 2024 | Aug. 14, 2023 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | --- | --- | --- | --- | --- | --- | ---
Cash, cash equivalents and restricted cash |  |  |  | $ 2,464 |  | $ 6,062 | $ 18,317 | $ 52,996
Accumulated deficit |  |  |  | $ 918,577 | $ 918,900 | $ 915,767 |  |
Common stock, shares authorized |  |  |  | 5,000,000 |  | 5,000,000 |  |
Common stock, shares outstanding |  |  |  | 1,601,252 |  | 1,601,252 |  |
Strategic advisor name |  |  | Cantor |  |  |  |  |
Pre Stock Split Shares Authorized | 34,666,667 | 520,000,000 |  |  |  |  |  |
Post Stock Split Shares Authorized | 5,000,000 | 34,666,667 |  |  |  |  |  |
Stockholders' Equity, Reverse Stock Split | The Third Charter Amendment became effective on July 17, 2024. | The Second Charter Amendment became effective on January 31, 2024. |  |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |
Common stock, shares outstanding |  |  |  | 1,601,252 |  |  |  |
Common stock reserved for future issuance |  |  |  | 175,476 |  |  |  |

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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-24 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-4 + Details
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