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Note 15 - Income Tax Benefit (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Tax Expense (Benefit) $ 1 $ (1,473) $ (10,325)
Effective Income Tax Rate Reconciliation, Percent 0.00% (10.70%) (64.80%)
Operating Loss Carryforward, Percent Limited to Taxable Income 80.00%    
Deferred Tax Assets, Valuation Allowance $ 14,216 $ 7,392  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense 0 $ (95) $ (60)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued $ 0