Note 12 - Income Taxes - Deferred Assets and Liabilities (Details) - USD ($)	Jun. 30, 2026	Jun. 30, 2025
Accumulated depreciation	$ 109,000	$ 122,000
Investments in securities at fair value	0	648,000
Impairment on securities	365,000	358,000
Accrued expenses	64,000	31,000
Product start-up costs	111,000	110,000
Deferred Tax Recognized	189,000	188,000
Other	101,000	92,000
Net operating loss carryover	848,000	0
Capital loss carryover	401,000	0
Subtotal Deferred Tax Assets	2,188,000	1,549,000
Valuation allowance	(52,000)	0
Total Deferred Tax Assets	2,136,000	1,549,000
Investments in securities at fair value	(390,000)	0
Prepaid expenses	(93,000)	(89,000)
Foreign tax on undistributed earnings	(205,000)	(209,000)
Total Deferred Tax Liabilities	(688,000)	(298,000)
Net Deferred Tax Asset	1,448,000	1,251,000
Deferred tax asset	1,461,000	1,268,000
Deferred tax liability	13,000	17,000
Net Deferred Tax Asset	$ 1,448,000	$ 1,251,000