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Note 17 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Deferred Tax Assets, Tax Credit Carryforwards, Research $ 81 $ 65
Domestic Tax Jurisdiction [Member]    
Operating Loss Carryforward Subject to Expiration 703  
Operating Loss Carryforwards 78,800  
State and Local Jurisdiction [Member]    
Operating Loss Carryforwards $ 30,800