Note 12 - Income Taxes - Reconciliation of Income Tax (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2026	Jun. 30, 2025
Tax expense (benefit) at statutory rate		$ 816	$ (55)
Tax expense at statutory rate, percent		21.00%	21.00%
Changes in uncertain tax positions		$ (36)	$ 106
Changes in uncertain tax positions, percent		(0.90%)	(40.50%)
Changes in valuation allowance		$ 24	$ 0
Changes in valuation allowance, percent		0.60%	0.00%
Dividend Income		$ (19)	$ (19)
Dividend Income, percent		(0.50%)	7.20%
Insurance		$ 16	$ 16
Insurance, percent		0.40%	(6.10%)
Meals and entertainment		$ 15	$ 11
Meals and entertainment, percent		0.40%	(4.20%)
Dues		$ 4	$ 9
Dues, percent		0.10%	(3.40%)
Other nontaxable or nondeductible items		$ 0	$ 2
Other nontaxable or nondeductible items, percent		0.00%	(0.80%)
Net effect of cross-border tax laws		$ (19)	$ (23)
Net effect of cross-border tax laws, percent		(0.50%)	8.80%
State and local income taxes, net of federal tax benefit 1	[1]	$ 4	$ 8
State and local income taxes, net of federal tax benefit, percent		0.10%	(3.10%)
Other		$ 4	$ 0
Other, percent		0.10%	0.00%
Total tax expense (benefit)		$ 829	$ 72
Total tax expense, percent		21.30%	(27.70%)
Canada Revenue Agency [Member]
Rate difference on foreign income (loss)		$ (31)	$ 3
Rate difference on foreign income (loss), percent		(0.80%)	(1.20%)
Changes in valuation allowance		$ 28	$ 0
Changes in valuation allowance, percent		0.70%	0.00%
Canadian withholding tax		$ 25	$ 23
Canadian withholding tax, percent		0.70%	(8.80%)
Dividend Income		$ (2)	$ (9)
Dividend Income, percent		(0.10%)	3.40%

[1] State taxes in Texas made up the majority (greater than 50%) of the tax effect in this category.