v3.26.1
Note 12 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount $ 6,400 $ 11,600  
Unrecognized Tax Benefits 13,598 8,537 $ 6,566
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense $ 0 $ 0  
Income Tax Jurisdiction, Domestic Federal [Member]      
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00% 21.00%  
Operating Loss Carryforwards $ 254,000 $ 221,100  
Operating Loss Carryforwards, Subject to Expiration 1,700    
Operating Loss Carryforward, Carried Forward Indefinitely 252,300    
Income Tax Jurisdiction, Domestic Federal [Member] | Research Tax Credit Carryforward [Member]      
Tax Credit Carryforward, Amount 24,300 12,800  
Income Tax Jurisdiction, Domestic State and Local [Member]      
Operating Loss Carryforwards 18,900 8,900  
Operating Loss Carryforwards, Subject to Expiration 7,300    
Operating Loss Carryforward, Carried Forward Indefinitely $ 11,600    
Open Tax Year 2020 2021 2022 2023 2024 2025    
Income Tax Jurisdiction, Domestic State and Local [Member] | Research Tax Credit Carryforward [Member]      
Tax Credit Carryforward, Amount $ 11,300 $ 10,000  
Income Tax Jurisdiction, Foreign [Member]      
Open Tax Year 2021 2022 2023 2024 2025    
Income Tax Jurisdiction, Foreign [Member] | Australian Taxation Office [Member]      
Operating Loss Carryforwards $ 500