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, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Accumulated other comprehensive income (loss), before tax	$ (33,246)	$ (32,042)	$ (35,864)	$ (37,925)
Accumulated other comprehensive income (loss), tax	6,981	6,729	7,532	7,964
Accumulated other comprehensive income (loss), net	(26,265)	(25,313)	(28,332)	(29,961)
Unrealized gains (losses) arising during the period	3,278	(3,772)	5,896	2,032
Unrealized holding losses on available-for-sale securities arising during the period, tax	(687)	792	(1,238)	(426)
Unrealized holding losses on available-for-sale securities arising during the period, net	2,591	(2,980)	4,658	1,606
Accumulated other comprehensive income (loss), before tax	(29,968)	(35,813)	(29,968)	(35,813)
Reclassification adjustment for net losses included in income	0	1	0	80	[1],[2]
Accumulated other comprehensive income (loss), tax	6,294	7,521	6,294	7,521
Amounts reclassified from accumulated other comprehensive income, tax		0		(17)	[1],[2]
Accumulated other comprehensive income (loss), net	(23,674)	(28,292)	(23,674)	(28,292)
Amounts reclassified from accumulated other comprehensive income, net		1		63	[1],[2]
Net current period other comprehensive loss, before tax		(3,771)		2,112
Net current period other comprehensive loss, tax		792		(443)
Other comprehensive income (loss)	$ 2,591	$ (2,979)	$ 4,658	$ 1,669

[1] Income tax expense

[2] Securities (gains) losses, net