Note 7 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Start-up costs	$ 11,792	$ 9,621
Federal net operating loss carryforwards	12,965	11,598
174 R&D Carryforward	8,935	6,636
State tax loss carryforwards	560	258
Foreign net operating loss carryforwards	332	377
Fixed Assets	14	9
Tax credit carryforward	1,919	1,919
ROU Liability	104	123
Deferred compensation	2,108	1,879
Total deferred tax assets	38,729	32,420
Less valuation allowance	(38,637)	(32,308)	$ (25,696)
Net deferred tax assets	92	112
ROU Asset	(92)	(112)
Total deferred tax liabilities	(92)	(112)
Net deferred taxes	$ 0	$ 0