v3.26.1
Note 11 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
US federal statutory tax rate, percent   21.00%
Changes in valuation allowance, percent   (11.00%)
Other, percent   0.00%
Effects of foreign currency change, percent   (2.00%)
Global Intangible Low-Taxed Income, percent   (8.00%)
Total provision (benefit) for income taxes $ (9) $ 15
Effective tax rate, percent (0.10%) 0.00%
Stock-based compensation   0.00%
Total   11.00%
Internal Revenue Service (IRS) [Member]    
US federal statutory tax rate, dollars $ 1,686  
US federal statutory tax rate, percent 21.00%  
State & local income taxes, net of federal effect, dollars [1] $ 0  
State & local income taxes, net of federal effect, percent [1] 0.00%  
Changes in valuation allowance, dollars $ (2,298)  
Changes in valuation allowance, percent (28.60%)  
Changes in tax laws or rates in current period, dollars $ 0  
Changes in tax laws or rates in current period, percent 0.00%  
Global Intangible Low-Taxed Income, dollars $ 640  
Global Intangible Low-Taxed Income, percent 8.00%  
Tax credits, dollars $ 0  
Tax credits, percent 0.00%  
Nontaxable or nondeductible items, dollars $ 17  
Nontaxable or nondeductible items, percent 0.20%  
Changes in unrecognized tax benefits, dollars $ 0  
Changes in unrecognized tax benefits, percent 0.00%  
Sweden Tax Authority [Member]    
Return to provision adjustment $ (572)  
Return to provision adjustment, percent (7.10%)  
Changes in valuation allowance, dollars $ 529  
Changes in valuation allowance, percent 6.60%  
Other, dollars $ 6  
Other, percent 0.10%  
Other Tax Authorities [Member]    
Effects of foreign currency change, dollars $ (17)  
Effects of foreign currency change, percent (0.20%)  
[1] The state that makes up the majority of the state & local income taxes category is California.