Note 3 - Financial Instruments and Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2025

Notes Tables

Fair Value, by Balance Sheet Grouping [Table Text Block]

	As of September 30, 2025 (unaudited)
					Quoted		Significant
					Priced in		other		Significant
					active		observable		unobservable
	Carrying		Fair		markets		inputs		inputs
	Amount		Value		(Level 1)		(Level 2)		(Level 3)
Assets
Money market funds	$	2,797	$	2,797	$	2,797	$	—	$	—
Total assets	$	2,797	$	2,797	$	2,797	$	—	$	—

	As of December 31, 2024
					Quoted		Significant
					Priced in		other		Significant
					active		observable		unobservable
	Carrying		Fair		markets		inputs		inputs
	Amount		Value		(Level 1)		(Level 2)		(Level 3)
Assets
Money market funds	$	1,819	$	1,819	$	1,819	$	—	$	—
Total assets	$	1,819	$	1,819	$	1,819	$	—	$	—