Note 7 - Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended
		Sep. 30, 2022		Sep. 30, 2021
Accumulated other comprehensive income (loss), before tax		$ (27,982)		$ 4,493
Accumulated other comprehensive income (loss), tax		5,876		(943)
Accumulated other comprehensive income (loss), net		(22,106)		3,550
Unrealized holding loss on available-for-sale securities arising during the period, before tax		(16,140)		(1,566)
Unrealized holding loss on available-for-sale securities arising during the period, tax		3,389		328
Unrealized holding loss on available-for-sale securities arising during the period, net		(12,751)		(1,238)
Amounts reclassified from accumulated other comprehensive income, before tax		11	[1],[2]	0
Amounts reclassified from accumulated other comprehensive income, tax	[1],[2]	(2)
Amounts reclassified from accumulated other comprehensive income, net	[1],[2]	9
Net current period other comprehensive loss, before tax		(16,129)
Net current period other comprehensive loss, tax		3,387
Other comprehensive income (loss)		(12,742)		(1,238)
Accumulated other comprehensive income (loss), before tax		(44,111)		2,927
Accumulated other comprehensive income (loss), tax		9,263		(615)
Accumulated other comprehensive income (loss), net		$ (34,848)		$ 2,312

[1] Income tax expense

[2] Securities (gains) losses, net