Note 7 - Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2025

Notes Tables

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2025			2024			2025			2024
Numerator:
Net loss	$	(2,290	)	$	(1,040	)	$	(3,567	)	$	(3,159	)
Less: preferred stock dividends		4			12			29			76
Less: deemed dividend		—			8,974			—			8,974
Net loss attributable to common stockholders	$	(2,294	)	$	(10,026	)	$	(3,596	)	$	(12,209	)
Denominator:
Weighted-average number of shares of common stock for basic and diluted net loss per share		3,101,231			890,943			2,049,441			735,286
Basic and diluted net loss per share	$	(0.74	)	$	(11.25	)	$	(1.76	)	$	(16.60	)

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

	As of September 30,
	2025		2024
Outstanding stock options		—		250
Common stock issuable upon conversion of Series F Preferred Stock (1)		44,747		50,222
Common stock issuable upon conversion of Series F Preferred Warrants (2)		8,097,347		2,784,922
Common stock issuable upon exercise of warrants for Common Stock		2,808,728		2,345,603