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Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Amount |  |  |
United States statutory tax rate | $ 3,484 |  |
State and local income taxes, net of federal income tax effect | (307) |  |
Innovation income deduction | 702 |  |
Federal research credits | 4,247 |  |
Other | 150 |  |
Changes in valuation allowances | (1,901) |  |
Meals and entertainment | (195) |  |
Stock-based compensation | (1,700) |  |
Non-deductible executive compensation | (824) |  |
Income from branch | (288) |  |
Other | (125) |  |
Changes in unrecognized tax benefits | (284) |  |
Income tax benefit | $ 3,679 | $ 2,429 | $ 2,960
Percent |  |  |
Federal tax rate | 21.00% | 21.00% | 21.00%
State tax rate - statutory blended rate | (1.80%) | 4.20% | 4.30%
Foreign rate differential |  | 5.40% | 2.80%
Innovation income deduction | 4.20% |  |
Other |  | 1.40% | 1.20%
Research tax benefits | 25.60% | 49.40% | 24.40%
Other | 0.90% |  |
Change in valuation allowance | (11.50%) | (22.80%) | (11.70%)
Stock-based compensation | (1.20%) |  |
Stock-based compensation | (10.20%) | 1.20% | (18.00%)
Non-deductible executive compensation | (5.00%) |  |
Income from branch | (0.017) |  |
Other | (0.80%) |  |
Changes in unrecognized tax benefits | (1.70%) |  |
Total | 22.20% | 27.10% | 15.30%
Belgium: |  |  |
Amount |  |  |
Effect of rates different than statutory | $ 297 |  |
Other | $ (28) |  |
Percent |  |  |
Foreign rate differential | 1.80% |  |
Other | (0.20%) |  |
Ireland: |  |  |
Amount |  |  |
Other | $ (40) |  |
Percent |  |  |
Other | (0.20%) |  |
United Kingdom: |  |  |
Amount |  |  |
Effect of rates different than statutory | $ 323 |  |
Other | $ (69) |  |
Percent |  |  |
Foreign rate differential | 1.90% |  |
Other | (0.40%) |  |
United States |  |  |
Amount |  |  |
Other | $ 122 |  |
Percent |  |  |
Other | 0.80% |  |
Other foreign jurisdictions |  |  |
Amount |  |  |
Effect of rates different than statutory | $ 115 |  |
Percent |  |  |
Foreign rate differential | 0.70% |  |

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