Note 10 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Deferred Tax Assets, Valuation Allowance	$ 25,808	$ 22,469
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	200	200
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	0	$ 0
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	31,300
Foreign Tax Jurisdiction [Member]
Operating Loss Carryforwards	$ 25,800
Open Tax Year	2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Domestic Tax Jurisdiction and State and Local Tax Jurisdiction [Member]
Open Tax Year	2020 2021 2022 2023