Note 13 - Income Taxes - Deferred Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021
Accumulated depreciation	$ 102	$ 110
Investments in securities at fair value	837	0
Accrued expenses	407	320
Product start-up costs	99	84
Stock-based compensation expense	164	0
Other	16	25
Total Deferred Tax Assets	1,625	539
Investments in securities at fair value	0	(2,600)
Prepaid expenses	(64)	(60)
Other investments	(430)	(389)
Equity method investments	0	(40)
Foreign tax on undistributed earnings	(259)	(249)
Total Deferred Tax Liabilities	(753)	(3,338)
Net Deferred Tax Asset	$ 872
Net Deferred Tax Liability		$ (2,799)