Note 7 - Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Dec. 31, 2025		Dec. 31, 2024	Dec. 31, 2025		Dec. 31, 2024
Accumulated other comprehensive income (loss), before tax		$ (24,374)		$ (26,051)	$ (28,549)		$ (35,864)
Accumulated other comprehensive income (loss), tax		5,119		5,470	5,995		7,532
Accumulated other comprehensive income (loss), net		(19,255)		(20,581)	(22,554)		(28,332)
Unrealized gains (losses) arising during the period		2,839		(7,195)	7,017		2,618
Unrealized holding losses on available-for-sale securities arising during the period, tax		(597)		1,511	(1,474)		(551)
Unrealized holding losses on available-for-sale securities arising during the period, net		2,242		(5,684)	5,543		2,067
Reclassification adjustment for net losses included in income		10	[1],[2]	0	7	[1],[2]	0
Accumulated other comprehensive income (loss), before tax		(21,525)		(33,246)	(21,525)		(33,246)
Amounts reclassified from accumulated other comprehensive income, tax	[1],[2]	(2)			(1)
Accumulated other comprehensive income (loss), tax		4,520		6,981	4,520		6,981
Amounts reclassified from accumulated other comprehensive income, net	[1],[2]	8			6
Accumulated other comprehensive income (loss), net		(17,005)		(26,265)	(17,005)		(26,265)
Net current period other comprehensive loss, before tax		2,849			7,024
Net current period other comprehensive loss, tax		(599)			(1,475)
Other comprehensive income (loss)		$ 2,250		$ (5,684)	$ 5,549		$ 2,067

[1] Income tax expense

[2] Securities losses, net