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Note 14 - Domestic and Foreign Revenues - Schedule of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net sales	$ 650	$ 438	$ 1,573	$ 1,282
SPAIN
Net sales	230	94	334	330
INDIA
Net sales	94	37	193	60
AUSTRALIA
Net sales	84	0	171	5
ROMANIA
Net sales	0	0	94	0
CANADA
Net sales	0	15	12	105
All Other Foreign Countries [Member]
Net sales	46	21	93	78
Non-US [Member]
Net sales	454	167	897	578
UNITED STATES
Net sales	$ 196	$ 271	$ 676	$ 704

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