Note 3 - Property and Equipment, Net (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment, Disposals	$ 93	$ 79	$ 181	$ 164
Fully Depreciated Property [Member]
Property, Plant and Equipment, Disposals			$ 19	111
Equipment [Member]
Gain (Loss) on Disposition of Property Plant Equipment, Total				$ 21