v3.26.1
Note 10 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax Reduction From Capitalized Research and Development Expenditures $ 11,400    
Deferred Tax Assets, Operating Loss Carryforwards 4,448 $ 4,247  
Tax Credit Carryforward, Amount 200 300  
Deferred Tax Assets, Valuation Allowance 2,057 1,844  
Unrecognized Tax Benefits 17,524 18,127 $ 19,823
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations 2,000    
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense 200 300 400
Income Tax Expense (Benefit) on Reversal of Interest and Penalties 400 1,100 2,300
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 1,100 1,200 $ 2,000
Federal and State and Local Authority [Member]      
Operating Loss Carryforwards 14,800 14,400  
Deferred Tax Assets, Operating Loss Carryforwards $ 3,900 $ 3,900