Note 13 - Financial Information by Business Segment - Total Revenues and Income by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023
Revenue from Contract with Customer, Including Assessed Tax	$ 2,593	$ 3,624	$ 8,544	$ 11,764
Net investment income (loss)	460	1,155	1,363	(189)
Other income (loss)	68	61	183	184
Income (loss) before income taxes	40	1,946	1,464	3,218
Depreciation	41	61	163	183
Gross identifiable assets	50,932	54,086	50,932	54,086
Deferred tax asset	1,840	1,659	1,840	1,659	$ 1,920
Consolidated total assets	52,772	55,745	52,772	55,745	$ 55,673
Investment Management Services [Member]
Revenue from Contract with Customer, Including Assessed Tax	2,593	3,624	8,544	11,764
Net investment income (loss)	0	0	0	0
Other income (loss)	68	61	183	184
Income (loss) before income taxes	(389)	815	164	3,461
Depreciation	41	61	163	183
Gross identifiable assets	27,542	25,056	27,542	25,056
Corporate Investments [Member]
Revenue from Contract with Customer, Including Assessed Tax	0	0	0	0
Net investment income (loss)	460	1,155	1,363	(189)
Other income (loss)	0	0	0	0
Income (loss) before income taxes	429	1,131	1,300	(243)
Depreciation	0	0	0	0
Gross identifiable assets	$ 23,390	$ 29,030	$ 23,390	$ 29,030