Note 9 - Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2024

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Net Loss Per Common Share

The following table presents the calculation of basic and diluted net loss per common share (in thousands, except share and per share amounts):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2024			2023			2024			2023
Basic and diluted net loss per common share:
Net loss	$	(3,487	)	$	(3,596	)	$	(11,094	)	$	(9,329	)
Adjustment to record the impact of exercise price reset on outstanding warrants related to down round provisions		—			(16	)		—			(16	)
Net loss available to common stockholders - basic and diluted	$	(3,487	)	$	(3,612	)	$	(11,094	)	$	(9,345	)
Weighted average shares used in calculating basic and diluted net loss per common share		1,500,409			489,624			1,168,277			402,074
Basic and diluted net loss per common share	$	(2.32	)	$	(7.38	)	$	(9.50	)	$	(23.24	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following potentially dilutive securities were excluded from the calculation of diluted net loss per share because their effects would be anti-dilutive:

	September 30,
	2024		2023
Stock options		51,733		36,132
Restricted stock units		3,728		22,864
Warrants for common stock		1,245,470		272,216
Series A Convertible Preferred Stock		8		8
Total		1,300,939		331,220