Note 8 - Net Loss Per Share - Schedule of Earning Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2024	Dec. 31, 2023
Net loss		$ (4,043,000)	$ (4,384,000)
Less: preferred stock dividends		89,000	343,000
Warrants, deemed dividend	$ 8,974,000	8,974,000	0
Less: conversion inducement		0	751,000
Warrant modification		0	25,000
Net loss attributable to common stockholders		$ (13,106,000)	$ (5,503,000)
Basic and diluted (in shares)		834	293
Basic and diluted net loss per share (in dollars per share)		$ (15.71)	$ (18.81)