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Note 10 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

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, 2023			456				5,526			$	4.42
Authorized			1,740				-				-
Options Granted			(1,761	)			1,761				3.10
RSAs Granted			(364	)			-				-
Exercised			-				(14	)			2.54
Forfeited/expired			61				(61	)			6.97
Balance as of March 31, 2024			132				7,212			$	4.08

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

		For the three months ended March 31,
Description		2024				2023
Dividend-yield			-				-
Risk-free interest rate			4.08	%			3.82	%
Expected volatility			115.42	%			125.32	%
Expected life (years)			5.81				7.00
Market value per share on grant date		$	3.10			$	3.75
Fair value per option on grant date		$	2.65			$	3.43

X

- Definition

Tabular disclosure of share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-1

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-Topic 718
-SubTopic 10
-Section 50
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-Publisher FASB
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+ References

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-Topic 718
-SubTopic 10
-Subparagraph (f)(2)
-Name Accounting Standards Codification
-Paragraph 2
-Section 50
-Publisher FASB
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