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Stockholders' Deficit (Shares Reserved for Future Issuance) (Details) - shares | Jun. 30, 2024 | Dec. 31, 2023
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Stock options outstanding | 4,645,737 | 3,165,216
Shares issuable under the Employee stock purchase plan | 11,890 |
Shares available for future grants under the 2016 Plan | 2,480,159 |
Warrants outstanding | 19,365,847 |
Shares issuable upon the conversion of convertible debt | 22,092,105 |
Total shares reserved | 48,885,738 |
Unvested Restricted Stock Units [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Unvested restricted stock units | 290,000 |
Equity Incentive Plan 2016 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Shares available for future grants under the 2016 Plan | 2,480,159 |

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- Definition The shares that, although not legally released, will be released by a future scheduled and committed debt service payment and will be allocated to employees for service rendered in the current accounting period. The ESOP documents typically define the period of service to which the shares relate. ESOP shares are released to compensate employees directly, to settle employer liabilities for other employee benefits, and to replace dividends on allocated shares that are used for debt service. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480489/718-40-50-1 + Details
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