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Income Taxes - Provision for Income Taxes Reconciliation to Statutory Federal Income Tax Rate (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Amount    
Tax provision at the U.S. federal statutory rate $ 269 $ (2,535)
State and local income taxes, net of federal income tax effect (32) 1,374
Foreign tax effects/Statutory tax rate difference (70) (17)
Other   31
Change in valuation allowance   (8,515)
Foreign income inclusion (Subpart F and GILTI) true-ups (1,820)  
Research and development credits (335) (1,204)
Share-based compensation   1,989
Non-deductible officer compensation 413 19
Non-deductible expense 46  
Other prior year true-up 126 26
Foreign income inclusions   6,177
Disallowance of loss on debt exchanges   3,344
(Benefit) Provision for income taxes $ 44 $ 689
Percent    
Tax provision at the U.S. federal statutory rate 21.00%  
State and local income taxes, net of federal income tax effect (2.60%)  
Foreign tax effects/Statutory tax rate difference (5.50%)  
Foreign income inclusion (Subpart F and GILTI) true-ups (142.00%)  
Research and development credits (26.10%)  
Non-deductible officer compensation 0.323  
Non-deductible expense 3.70%  
Other prior year true-up 9.90%  
Income tax expense and effective income tax rate 3.40%  
China    
Amount    
Foreign tax effects/Statutory tax rate difference $ (26)  
Other $ (5)  
Percent    
Foreign tax effects/Statutory tax rate difference (2.10%)  
Other (0.40%)  
South Africa    
Amount    
Foreign tax effects/Statutory tax rate difference $ (8)  
Other 9  
Change in valuation allowance $ 35  
Percent    
Foreign tax effects/Statutory tax rate difference (0.60%)  
Other 0.70%  
Change in valuation allowance 2.70%  
Other foreign jurisdictions    
Amount    
Foreign tax effects/Statutory tax rate difference $ 9  
Percent    
Foreign tax effects/Statutory tax rate difference 0.70%  
UNITED STATES    
Amount    
Change in valuation allowance $ 981  
Share-based compensation $ 452  
Percent    
Change in valuation allowance 76.50%  
Share-based compensation 35.20%