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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2025
Income Tax Disclosure [Abstract] |
Schedule of Income (Loss) Before Provision for Income Taxes | Income/(Loss) before provision for income taxes consisted of the following for the year ended December 31, 2025 and 2024 (in thousands): Schedule of Income (Loss) Before Provision for Income Taxes
|  | 2025 |  |  | 2024 |
United States |  | $ | (20,100 | ) |  | $ | (22,215 | )
International |  |  | 52 |  |  |  | 20 |
Loss before provision for income taxes |  | $ | (20,048 | ) |  | $ | (22,195 | )
Schedule of Income Tax Expenses (Benefit) by Jurisdiction | The income tax expense (benefit) by jurisdiction for the year ended December 31, 2025 and 2024, were as follows (in thousands): Schedule of Income Tax Expenses (Benefit) by Jurisdiction
|  | 2025 |  |  | 2024 |
Current: |  |  |  |  |  |  |  |
Federal |  | $ | — |  |  | $ | — |
State and local |  |  | 1 |  |  |  | — |
Foreign |  |  | 14 |  |  |  | 14 |
Total current |  | $ | 15 |  |  | $ | 14 |
Deferred: |  |  |  |  |  |  |  |
Federal |  | $ | — |  |  | $ | — |
State and local |  |  | — |  |  |  | — |
Foreign |  |  | — |  |  |  | — |
Total deferred |  |  | — |  |  |  | — |
Total tax expense |  | $ | 15 |  |  | $ | 14 |
Schedule of Reconciliation of Income Tax Benefit | A reconciliation of the benefit for income taxes to the amount computed by applying the 21% statutory U.S. federal income tax rate to loss before income taxes for the year ended December 31, 2025, after the adoption of ASU 2023-09, is as follows (in thousands, except for percentages): Schedule of Reconciliation of Income Tax Benefit
|  | Amount |  |  | Percent |
|  | 2025 |
|  | Amount |  |  | Percent |
U.S. Federal statutory tax rate |  | $ | (4,210 | ) |  |  | 21 | %
State tax, net of federal income tax effect(1) |  |  | 1 |  |  |  | — | %
Enactment of new tax laws |  |  | — |  |  |  | — | %
Effect of cross-border tax laws |  |  | — |  |  |  | — | %
Tax credits |  |  | (299 | ) |  |  | 2 | %
Change in valuation allowance |  |  | 3,519 |  |  |  | (17 | )%
Nontaxable or non-deductible items |  |  |  |  |  |  |  |
Non-deductible expenses |  |  | 30 |  |  |  | — | %
Stock based compensation |  |  | 121 |  |  |  | (1 | )%
Worldwide changes in unrecognized tax benefits |  |  | 342 |  |  |  | (2 | )%
Other |  |  |  |  |  |  |  |
Deferred tax adjustments |  |  | 139 |  |  |  | (1 | )%
Non-controlling interest |  |  | 348 |  |  |  | (2 | )%
Other |  |  | 10 |  |  |  | — | %
Other permanent differences |  |  |  |  |  |  |  |
Change in fair value of debt |  |  |  |  |  |  |  |
Stock issuance cost |  |  |  |  |  |  |  |
Acquired startup costs |  |  |  |  |  |  |  |
Foreign tax effects |  |  |  |  |  |  |  |
Germany |  |  |  |  |  |  |  |
Foreign employee stock based compensation |  |  | 11 |  |  |  | — | %
Rate differential |  |  | (4 | ) |  |  | — | %
Other |  |  | 1 |  |  |  | — | %
Australia |  |  |  |  |  |  |  |
Rate differential |  |  | (1 | ) |  |  | — | %
Change in valuation allowance |  |  | 7 |  |  |  | — | %
Effective income tax rate |  | $ | 15 |  |  |  | — | %
(1) | California contributes to the majority (greater than 50%) of the tax effect in this category for 2025.
The Company adopted ASC 2023-09 on a prospective basis. A reconciliation of the benefit for income taxes to the amount computed by applying the 21% statutory U.S. federal income tax rate to loss before income taxes for the year ended December 31, 2024, before the adoption of ASU 2023-09, is as follows: Schedule of U.S. Federal Income Tax Rates Indicated to Pretax Loss From Operations
|  | 2024 |
Computed tax benefit at U.S. federal statutory tax rate |  |  | 21 | %
Permanent differences |  |  | — | %
State tax benefit |  |  | 7 | %
Stock based compensation |  |  | (3 | )%
Other permanent differences |  |  | (1 | )%
Change in valuation allowance |  |  | (25 | )%
Research and development credit |  |  | — | %
Change in fair value of debt |  |  | 1 | %
Stock issuance cost |  |  | — | %
Acquired startup costs |  |  | — | %
Pretax loss from operations rates total |  |  | — | %
Schedule of Cash Paid for Income Taxes, Net of Refunds Received | Upon adoption of ASU 2023-09, cash paid for income taxes, net of refunds received, were as follows (in thousands): Schedule of Cash Paid for Income Taxes, Net of Refunds Received
|  | Year Ended December 31, 2025 |
Federal taxes |  | $ | — |
State and local taxes |  |  | 1 |
Foreign taxes: |  |  | — |
Australia |  |  | — |
Germany |  |  | 16 |
Total cash paid for income taxes, net of refunds |  | $ | 17 |
Schedule of Components of Deferred Tax Assets and Liabilities | The primary components of the deferred tax assets and liabilities at December 31, 2025 and 2024 were as follows (in thousands): Schedule of Components of Deferred Tax Assets and Liabilities
|  | 2025 |  |  | 2024 |
Deferred tax assets/(liabilities): |  |  |  |  |  |  |  |
Net operating loss carryforwards |  | $ | 25,920 |  |  | $ | 20,221 |
Research and development credit carryforwards |  |  | 928 |  |  |  | 931 |
Stock-based and other compensation |  |  | 2,355 |  |  |  | 2,135 |
Lease liability |  |  | 479 |  |  |  | 859 |
Capitalized research and development expenditures |  |  | 3,520 |  |  |  | 4,247 |
Depreciation and amortization |  |  | 1,315 |  |  |  | 1,393 |
Accrued liabilities and other reserves |  |  | 178 |  |  |  | 446 |
Total deferred tax assets |  |  | 34,695 |  |  |  | 30,232 |
Right-of-use and other assets |  |  | (480 | ) |  |  | (830 | )
Total deferred tax liabilities |  |  | (480 | ) |  |  | (830 | )
Valuation allowance |  |  | (34,215 | ) |  |  | (29,402 | )
Net deferred tax asset |  | $ | — |  |  | $ | — |
Schedule of Unrecognized Tax Benefit | A reconciliation of the beginning and ending unrecognized tax benefit amount is as follows (in thousands): Schedule of Unrecognized Tax Benefit
|  | 2025 |  |  | 2024 |
|  | December 31, |
|  | 2025 |  |  | 2024 |
Balance at the beginning of the year |  | $ | 1,799 |  |  | $ | 1,517 |
Additions based on tax positions related to current year |  |  | 282 |  |  |  | 282 |
Adjustments based on tax positions related to prior years |  |  | 283 |  |  |  | — |
Balance at end of year |  | $ | 2,364 |  |  | $ | 1,799 |

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