Note 5 - Net Loss Per Common Share (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended
	March 31,
	2024			2023
Loss from continuing operations	$	(1,222	)	$	(3,091	)
Loss from discontinued operations		-			(687	)
Net loss	$	(1,222	)	$	(3,778	)
Shares used in the calculation of basic and diluted net loss per share		26,354			25,261
Loss per share from continuing operations - basic and diluted	$	(0.05	)	$	(0.12	)
Loss per share from discontinued operations - basic and diluted		-			(0.03	)
Net loss per share - basic and diluted	$	(0.05	)	$	(0.15	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	March 31,
	2024		2023
Stock options		3,015,924		2,946,470
Total		3,015,924		2,946,470