Note 8 - Net Loss Per Share - Schedule of Earnings Per Share (Details) - USD ($)		12 Months Ended
	Aug. 23, 2024	Dec. 31, 2025	Dec. 31, 2024
Net loss		$ (6,355,000)	$ (4,043,000)
Less: preferred stock dividends		32,000	89,000
Less: deemed dividend	$ 8,974,000	0	8,974,000
Net loss attributable to common stockholders		$ (6,387,000)	$ (13,106,000)
Basic and diluted (in shares)		2,316,057	834,209
Basic net loss per share (in dollars per share)		$ (2.76)	$ (15.71)