Note 7 - Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026		Mar. 31, 2025
Accumulated other comprehensive income (loss), before tax		$ (21,525)	$ (33,246)	$ (28,549)		$ (35,864)
Accumulated other comprehensive income (loss), tax		4,520	6,981	5,995		7,532
Accumulated other comprehensive income (loss), net		(17,005)	(26,265)	(22,554)		(28,332)
Unrealized (losses) gains arising during the period		(1,906)	3,278	5,111		5,896
Unrealized holding losses on available-for-sale securities arising during the period, tax		401	(687)	(1,073)		(1,238)
Unrealized holding losses on available-for-sale securities arising during the period, net		(1,505)	2,591	4,038		4,658
Accumulated other comprehensive income (loss), before tax		(23,431)	(29,968)	(23,431)		(29,968)
Reclassification adjustment for net losses included in income		0	0	7	[1],[2]	0
Accumulated other comprehensive income (loss), tax		4,921	6,294	4,921		6,294
Amounts reclassified from accumulated other comprehensive income, tax	[1],[2]			(1)
Accumulated other comprehensive income (loss), net		(18,510)	(23,674)	(18,510)		(23,674)
Amounts reclassified from accumulated other comprehensive income, net	[1],[2]			6
Net current period other comprehensive loss, before tax				5,118
Net current period other comprehensive loss, tax				(1,074)
Other comprehensive (loss) income		$ (1,505)	$ 2,591	$ 4,044		$ 4,658

[1] Income tax expense

[2] Securities losses, net