Note 14 - Domestic and Foreign Revenues - Schedule of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Net sales	$ 392	$ 441
ROMANIA
Net sales	94	0
INDIA
Net sales	84	23
SPAIN
Net sales	48	0
CANADA
Net sales	1	43
All Other Foreign Countries [Member]
Net sales	32	11
Non-US [Member]
Net sales	259	77
UNITED STATES
Net sales	$ 133	$ 364

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details