Note 11 -Income Taxes -Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Tax benefit of operating loss carry forward - Federal	$ 30,164	$ 29,416
Tax benefit of operating loss carry forward - State	6,319	5,965
Accrued expenses	211	131
Deferred revenue	8	36
Stock-based compensation	0	56
Fixed assets	1	4
Inventory	199	156
Intangible amortization	19	32
Section 174 research and experimentation	261	0
Section 163(j) interest expense	0	314
R&D credit	2,154	2,154
Texas margin tax temporary credit	37	55
Other	33	61
Total deferred tax asset, net of deferred tax liabilities	39,406	38,380
Valuation allowance	(39,406)	(38,380)
Net deferred tax asset	$ 0	$ 0