v3.25.4

Note 14 - Income Taxes - Schedule of Effective Tax Rate of Provision for Income Taxes differs from Federal Statutory Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Federal statutory rate	$ (13,963)	$ (10,368)
Federal statutory rate	21.00%	21.00%
State and local income tax, net of federal (national) income tax effect	$ (4,416)	$ (3,454)
State and local income tax, net of federal (national) income tax effect	6.60%	7.00%
Foreign Tax Effects	$ 0	$ 0
Foreign Tax Effects	0.00%	0.00%
Effect of changes in tax laws or rates enacted in the current period	$ 0	$ 0
Effect of changes in tax laws or rates enacted in the current period	0.00%	0.00%
Effect of cross-border tax laws	$ 0	$ 0
Effect of cross-border tax laws	0.00%	0.00%
Research and development tax credits, amount	$ (2,045)	$ (2,864)
Research and development tax credits, percent	3.10%	5.80%
Changes in valuation allowance	$ 19,744	$ 15,778
Changes in valuation allowance	(29.80%)	(32.00%)
Stock compensation & other nondeductible expenses	$ 680	$ 532
Stock compensation & other nondeductible expenses	(0.90%)	(1.10%)
Changes in unrecognized tax benefits	$ 0	$ 0
Changes in unrecognized tax benefits	0.00%	0.00%
Other	$ 0	$ 376
Other	0.00%	(0.70%)
Effective income tax rate	$ 0	$ 0
Effective income tax rate	0.00%	0.00%

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in unrecognized tax benefits.

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