Note 3 - Investments - Investment Income or Loss Reflected in Earnings From Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023
Realized gains (losses) on equity securities	$ (6,094)	$ (13)	$ (6,834)	$ (13)
Realized gains (losses) on debt securities	267	394	906	1,299
Unrealized gains (losses) on equity securities	5,863	283	5,699	(2,586)	$ (6,396)
Unrealized gains (losses) on debt securities	(65)	0	(20)	0
Unrealized gains (losses) on embedded derivatives	(22)	55	(85)	82
Unrealized gains (losses) on cash equivalents	0	0	(2)	0
Dividend and interest income	595	421	1,781	1,321
Realized foreign currency gains (losses)	(84)	15	(82)	(292)
Total Net Investment Income (Loss)	$ 460	$ 1,155	$ 1,363	$ (189)