Note 7 - Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended
		Sep. 30, 2019	Sep. 30, 2018
Accumulated other comprehensive income (loss), before tax		$ 1,982	$ (2,069)
Unrealized holding gain (loss) on available-for-sale securities arising during the period, before tax		818	(893)
Amounts reclassified from accumulated other comprehensive income, before tax	[1],[2]	(106)	(587)
Net current period other comprehensive income (loss), before tax		712	(1,480)
Accumulated other comprehensive income (loss), before tax		2,694	(3,549)
Accumulated other comprehensive income (loss), tax		(416)	434
Unrealized holding gain (loss) on available-for-sale securities arising during the period, tax		(171)	188
Amounts reclassified from accumulated other comprehensive income, tax	[1],[2]	22	124
Net current period other comprehensive income (loss), tax		(149)	312
Accumulated other comprehensive income (loss), tax		(565)	746
Accumulated other comprehensive income (loss), net		1,566	(1,635)
Unrealized holding gain (loss) on available-for-sale securities arising during the period, net		647	(705)
Amounts reclassified from accumulated other comprehensive income, net	[1],[2]	(84)	(463)
Net current period other comprehensive loss		563	(1,168)
Accumulated other comprehensive income (loss), net		$ 2,129	$ (2,803)

[1] Income tax expense

[2] Securities (gains) losses, net