Note 3 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]

	Fair Value at March 31, 2024
	Total		Level 1		Level 2		Level 3
Liabilities:
Derivative liability - Warrants		-		-		-		-
Total liabilities	$	-	$	-	$	-	$	-

	Fair Value at December 31, 2023
	Total		Level 1		Level 2		Level 3
Liabilities:
Derivative liability - Warrants		79		-		-		79
Total liabilities	$	79	$	-	$	-	$	79

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	Derivative liability - Warrants
Balance at January 1, 2024	$	79
Change in fair value		(79	)
Balance at March 31, 2024	$	-

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	March 31,			December 31,
	2024			2023
Exercise price	$	0.4431		$	0.4431
Contractual term (years)		0.07			0.32
Volatility (annual)		110.0	%		90.0	%
Risk-free rate		4.5	%		5.4	%
Dividend yield (per share)		0	%		0	%