Note 8 - Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

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

	Year Ended December 31,
Numerator:	2024			2023
Net loss	$	(4,043	)	$	(4,384	)
Less: preferred stock dividends		89			343
Less: deemed dividend		8,974			—
Less: conversion inducement		—			751
Less: warrant modification		—			25
Net loss attributable to common stockholders	$	(13,106	)	$	(5,503	)
Denominator:
Weighted-average number of shares of common stock for basic net loss per share		834			293
Basic net loss per share	$	(15.71	)	$	(18.81	)

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

	Year Ended December 31,
	2024		2023
Outstanding stock options		—		250
Common stock issuable upon conversion of Series F Preferred Stock (1)		51,357		184,820
Common stock issuable upon conversion of Series F Preferred Warrants (2)		2,784,921		2,932,486
Common stock issuable upon conversion of Common Stock Warrants		2,272,203		2,071,855