Note 3 - Inventory - Schedule of Inventory (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Reserve balance as of December 31, 2022	$ (691,000)	$ (452,000)
Reserve adjustments	(191,000)	(342,000)
Disposals		103,000
Reserve balance as of December 31, 2023	$ (882,000)	$ (691,000)