v3.26.1
Note 14 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount $ 30,500 $ 2,900
Operating Loss Carryforward, Ownership change Limitation Amount, Year One Through Five 1,700  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued $ 0 $ 0
Open Tax Year 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025  
Research Tax Credit Carryforward [Member] | Subject to Expiration [Member]    
Tax Credit Carryforward, Amount $ 7,500  
Domestic Tax Jurisdiction [Member]    
Operating Loss Carryforwards 295,900  
Operating Loss Carryforward, Limitations After Year Five 600  
Operating Loss Carryforwards, Subject To Expiration 102,200  
Domestic Tax Jurisdiction [Member] | Research Tax Credit Carryforward [Member]    
Tax Credit Carryforward, Amount 100  
Domestic Tax Jurisdiction [Member] | Before Tax Year 2018 [Member]    
Operating Loss Carryforwards 12,700  
Domestic Tax Jurisdiction [Member] | Tax Years 2018 to 2022 [Member]    
Operating Loss Carryforwards 283,200  
State and Local Jurisdiction [Member]    
Operating Loss Carryforwards 23,000  
Operating Loss Carryforward, Limitations After Year Five 600  
Operating Loss Carryforwards, Subject To Expiration 119,600  
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member]    
Tax Credit Carryforward, Amount $ 4,900