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Note 1 - General Information - Revenue by Product (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Revenue	$ 297	$ 34
Training [Member]
Revenue	20	0
Grant [Member]
Revenue	234	0
Service [Member]
Revenue	30	9
Warranty [Member]
Revenue	$ 13	$ 25

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