Note 12 - Financial Information by Business Segment - Total Revenues and Income by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Jun. 30, 2024
Revenue from Contract with Customer, Including Assessed Tax	$ 2,231	$ 2,818	$ 4,388	$ 5,951
Net investment income (loss)	354	1,416	1,271	903
Other income (loss)	69	57	147	115
Income (loss) before income taxes	(116)	1,665	320	1,424
Depreciation	16	62	38	123
Gross identifiable assets	48,249	51,502	48,249	51,502
Deferred tax asset	1,859	2,130	1,859	2,130	$ 1,833
Consolidated total assets	50,108	53,632	50,108	53,632	$ 51,963
Investment Management Services [Member]
Revenue from Contract with Customer, Including Assessed Tax	2,231	2,818	4,388	5,951
Net investment income (loss)	0	0	0	0
Other income (loss)	69	57	147	115
Income (loss) before income taxes	(456)	266	(914)	553
Depreciation	16	62	38	123
Gross identifiable assets	27,259	27,417	27,259	27,417
Corporate Investments [Member]
Revenue from Contract with Customer, Including Assessed Tax	0	0	0	0
Net investment income (loss)	354	1,416	1,271	903
Other income (loss)	0	0	0	0
Income (loss) before income taxes	340	1,399	1,234	871
Depreciation	0	0	0	0
Gross identifiable assets	$ 20,990	$ 24,085	$ 20,990	$ 24,085