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Note 14 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue	$ 22	$ 32	$ 86	$ 52
Transferred at Point in Time [Member]
Revenue	22	6	22	26
Transferred over Time [Member]
Revenue	0	26	64	26
UNITED STATES
Revenue	5	26	5	41
Europe [Member]
Revenue	1	6	65	11
Asia Pacific [Member]
Revenue	$ 16	$ 0	$ 16	$ 0

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