Note 13 - Income Taxes - Reconciliation of Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Tax expense at statutory rate	$ 1,042	$ 7,862
Tax expense at statutory rate, percent	21.00%	21.00%
Tax expense (benefit) from change in foreign unrealized gain/loss	$ (281)	$ 281
Tax expense (benefit) from change in foreign unrealized gain/loss, percent	(5.70%)	0.70%
Non-taxable investment income (loss)	$ 294	$ (3,302)
Non-taxable investment income, percent	5.90%	(8.80%)
Change in valuation allowance	$ 0	$ (2,762)
Change in valuation allowance, percent	0.00%	(7.40%)
Income from controlled foreign corporation	$ 307	$ 3,534
Income from controlled foreign corporation, percent	6.20%	9.40%
Rate difference on foreign deferred income (loss)	$ (262)	$ 777
Rate difference on foreign deferred income, percent	(5.30%)	2.10%
Rate difference on foreign income (loss)	$ (29)	$ 1,075
Rate difference on foreign income, percent	(0.60%)	2.90%
Foreign tax credit	$ (153)	$ (1,825)
Foreign tax credit, percent	(3.10%)	(4.90%)
Other	$ 231	$ (163)
Other, percent	4.70%	(0.40%)
Total tax expense	$ 1,149	$ 5,477
Total tax expense, percent	23.10%	14.60%