Note 9 - Stock Based Compensation (Tables)

6 Months Ended

Jun. 30, 2025

Notes Tables

Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]

		*Shares Available for Grant*				*Number of Shares Outstanding*				*Weighted-Average Exercise Price*
Balance as of December 31, 2024			78				7,201			$	4.06
Authorized			2,148								-
Options Granted			(1,816	)			1,816				2.73
Common Stock Granted			(396	)			-				-
Exercised			-				(340	)			0.76
Forfeited/expired			76				(76	)			4.54
Balance as of June 30, 2025			90				8,601			$	3.91

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

		*For the six months ended June 30,*
Description		*2025*				*2024*
Dividend-yield			-%				-%
Risk-free interest rate			4.30%				4.08%
Expected volatility			113.50%				115.42%
Expected life (years)			5.81				5.81
Market value per share on grant date			$ 2.73				$ 3.10
Fair value per option on grant date			$ 2.32				$ 2.65