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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2025
Income Tax Disclosure [Abstract] |
Schedule of Loss before Income Taxes | The Company’s income (loss) before income taxes for the years ended December 31, 2025 and 2024 is comprised of the following (in thousands):
| Year Ended December 31,
| 2025 |  | 2024 |  |
Domestic | $ | 1,102 |  |  | $ | (13,883) |  |  |
Foreign | 180 |  |  | 203 |  |  |
Income (loss) before income taxes | $ | 1,282 |  |  | $ | (13,680) |  |  |
Schedule of Provision for Income Taxes | The (benefit) provision for income taxes for the years ended December 31, 2025 and 2024 is comprised of the following (in thousands):
| Year Ended December 31,
| 2025 |  | 2024 |  |
Current: |  |  |  |  |
Federal | $ | — |  |  | $ | — |  |  |
State | (20) |  |  | 598 |  |  |
Foreign | 52 |  |  | 29 |  |  |
Total current | 32 |  |  | 627 |  |  |
Deferred: |  |  |  |  |
Federal | 12 |  |  | (43) |  |  |
State | — |  |  | 105 |  |  |
Foreign | — |  |  | — |  |  |
Total deferred | 12 |  |  | 62 |  |  |
(Benefit) Provision for income taxes | $ | 44 |  |  | $ | 689 |  |  |
Schedule of Net Deferred Tax Assets | The Company’s net deferred tax liabilities consist of the following (in thousands):
| December 31,
| 2025 |  | 2024
Deferred tax assets: |  |  |
Accrued expenses | $ | 2,662 |  |  | $ | 4,620 |
Provision for excess and obsolete inventory | 3,961 |  |  | 4,162 |
Capitalized research and experimental expenditures | 9,797 |  |  | 11,216 |
Convertible debt | 464 |  |  | 608 |
Depreciation and amortization | 1,861 |  |  | 2,063 |
Interest expense limitation | 20,307 |  |  | 19,944 |
Net operating loss and tax credit carryforwards | 103,579 |  |  | 97,347 |
Share-based compensation | 1,554 |  |  | 1,533 |
Operating lease liability | 943 |  |  | 985 |
Other | 130 |  |  | 351 |
Deferred tax assets | 145,258 |  |  | 142,829 |
Valuation allowances | (143,888) |  |  | (141,628) |
Deferred tax assets, net of valuation allowances | 1,370 |  |  | 1,201 |
Deferred tax liabilities: |  |  |
Right of use asset | (841) |  |  | (710) |
Acquired intangible assets | (715) |  |  | (665) |
Deferred tax liabilities | (1,556) |  |  | (1,375) |
Deferred tax liabilities, net | $ | (186) |  |  | $ | (174) |
Schedule of Provision for Income Taxes Reconciles to Amount Computed by Applying Statutory Federal Income Tax Rate | The (benefit) provision for income taxes reconciles to the amount computed by applying the statutory federal income tax rate of 21% in 2025 and 2024 to loss before income taxes as follows (in thousands, excluding percentages):
| Post-ASU 2023-09 Adoption
| Year Ended December 31,
| 2025 |  |  |  |
| Amount |  | % |  |  |  |  |  |  |  |
Tax provision at the U.S. federal statutory rate | 269 |  |  | 21.0 | % |  |  |  |  |  |  |  |
State and local income taxes, net of federal income tax effect | (32) |  |  | (2.6) | % |  |  |  |  |  |  |  |
Foreign tax effects: |  |  |  |  |  |  |  |  |  |  |
China |  |  |  |  |  |  |  |  |  |  |
Statutory tax rate difference between China and the U.S. | (26) |  |  | (2.1) | % |  |  |  |  |  |  |  |
Other | (5) |  |  | (0.4) | % |  |  |  |  |  |  |  |
South Africa |  |  |  |  |  |  |  |  |  |  |
Statutory tax rate difference between South Africa and the U.S. | (8) |  |  | (0.6) | % |  |  |  |  |  |  |  |
Change in valuation allowance | 35 |  |  | 2.7 | % |  |  |  |  |  |  |  |
Other | 9 |  |  | 0.7 | % |  |  |  |  |  |  |  |
Other foreign jurisdictions | 9 |  |  | 0.7 | % |  |  |  |  |  |  |  |
Effect of cross-border tax laws: |  |  |  |  |  |  |  |  |  |  |
Foreign income inclusion (Subpart F and GILTI) true-ups | (1,820) |  |  | (142.0) | % |  |  |  |  |  |  |  |
Tax credits: |  |  |  |  |  |  |  |  |  |  |
Research and development credits | (335) |  |  | (26.1) | % |  |  |  |  |  |  |  |
Changes in valuation allowances | 981 |  |  | 76.5 | % |  |  |  |  |  |  |  |
Nontaxable or nondeductible items: |  |  |  |  |  |  |  |  |  |  |
Share-based compensation | 452 |  |  | 35.2 | % |  |  |  |  |  |  |  |
Non-deductible officer compensation | 413 |  |  | 32.3 | % |  |  |  |  |  |  |  |
Non-deductible expense | 46 |  |  | 3.7 | % |  |  |  |  |  |  |  |
Other adjustments: |  |  |  |  |  |  |  |  |  |  |
Foreign tax deduction | (70) |  |  | (5.5) | % |  |  |  |  |  |  |  |
Other prior year true-up | 126 |  |  | 9.9 | % |  |  |  |  |  |  |  |
Income tax expense and effective income tax rate | 44 |  |  | 3.4 | % |  |  |  |  |  |  |  |
| Pre-ASU 2023-09 Adoption
| Year Ended December 31,
| 2024
Federal tax benefit, at statutory rate | $ | (2,535) |
State provision, net of federal benefit | 1,374 |
Foreign tax rate difference | (17) |
Foreign income inclusions | 6,177 |
Valuation allowance against future tax benefits | (8,515) |
Research and development credits | (1,204) |
Share-based compensation | 1,989 |
Disallowance of loss on debt exchanges | 3,344 |
Non-deductible officers compensation | 19 |
True-up of prior year provisions | 26 |
Other | 31 |
Provision for income taxes | $ | 689 |
Schedule of Income Taxes Paid (Net Of Refunds Received) | The following table presents supplemental cash flow information related to income taxes paid (net of refunds received):
| Year Ended December 31,
| 2025 |  |  |  |
Federal | — |  |  |  |  |
US state and local: |  |  |  |  |
Illinois | 70 |  |  |  |  |
Indiana | 95 |  |  |  |  |
Pennsylvania | 185 |  |  |  |  |
Texas | 88 |  |  |  |  |
Other | 61 |  |  |  |  |
Foreign: |  |  |  |  |
South Africa | 833 |  |  |  |  |
Other | 29 |  |  |  |  |
Total income taxes paid (net of refunds received) | 1,361 |  |  |  |  |
Schedule of Reconciliation in Beginning and Ending Amounts of Unrecognized Tax Benefits | A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows (in thousands):
Balance at December 31, 2023 | $ | 12,639 |
Increases related to current and prior year tax positions | 719 |
Balance at December 31, 2024 | 13,358 |
Increases related to current and prior year tax positions | 468 |
Balance at December 31, 2025 | $ | 13,826 |

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