Note 7 - Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended
		Sep. 30, 2020		Sep. 30, 2019
Accumulated other comprehensive income (loss), before tax		$ 5,393		$ 1,982
Accumulated other comprehensive income (loss), tax		(1,133)		(416)
Accumulated other comprehensive income (loss), net		4,260		1,566
Unrealized holding gain on available-for-sale securities arising during the period, before tax		70	[1],[2]	818
Unrealized holding gain on available-for-sale securities arising during the period, tax		(14)	[1],[2]	(171)
Unrealized holding gain on available-for-sale securities arising during the period, net		56	[1],[2]	647
Amounts reclassified from accumulated other comprehensive income, before tax				(106)	[1],[2]
Amounts reclassified from accumulated other comprehensive income, tax	[1],[2]			22
Amounts reclassified from accumulated other comprehensive income, net	[1],[2]			(84)
Net current period other comprehensive income, before tax				712
Net current period other comprehensive income, tax				(149)
Other comprehensive income		56		563
Accumulated other comprehensive income (loss), before tax		5,463		2,694
Accumulated other comprehensive income (loss), tax		(1,147)		(565)
Accumulated other comprehensive income (loss), net		$ 4,316		$ 2,129

[1] Income tax expense

[2] Securities (gains) losses, net