Note 12 - Financial Information by Business Segment - Total Revenues and Income by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023
Revenue from Contract with Customer, Including Assessed Tax	$ 3,133	$ 4,412
Investment Income, Net	(513)	(1,460)
Other income	57	61
Income (loss) before income taxes	(241)	186
Depreciation	61	61
Gross identifiable assets	51,805	55,612
Deferred tax asset	2,287	1,373	$ 1,920
Consolidated total assets	54,092	56,985	$ 55,673
Investment Management Services [Member]
Revenue from Contract with Customer, Including Assessed Tax	3,133	4,412
Investment Income, Net	0	0
Other income	57	61
Income (loss) before income taxes	288	1,661
Depreciation	61	61
Gross identifiable assets	26,954	23,607
Corporate Investments [Member]
Revenue from Contract with Customer, Including Assessed Tax	0	0
Investment Income, Net	(513)	(1,460)
Other income	0	0
Income (loss) before income taxes	(529)	(1,475)
Depreciation	0	0
Gross identifiable assets	$ 24,851	$ 32,005