Note 16 - Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018		Jun. 30, 2017	Jun. 30, 2016
Accumulated other comprehensive income (loss), before tax	$ (2,069)		$ 675	$ 3,621
Accumulated other comprehensive income (loss), tax	(434)			(1,232)
Accumulated other comprehensive income (loss), net	(1,635)		445	2,389
Unrealized holding gain on available-for-sale securities arising during the period, before tax	(2,711)		(2,737)
Unrealized holding loss on available-for-sale securities arising during the period, tax	638		931
Unrealized holding gain on available-for-sale securities arising during the period, net	(2,073)		(1,806)
Amounts reclassified from accumulated other comprehensive income, before tax	(33)	[1],[2]	(209)
Amounts reclassified from accumulated other comprehensive income, tax	12	[1],[2]	71
Amounts reclassified from accumulated other comprehensive income, net	21	[1],[2]	(138)
Net current period other comprehensive income (loss), before tax	(2,744)		(2,946)
Net current period other comprehensive loss, tax	650		1,002
Net current period other comprehensive income (loss), net	(2,094)		(1,944)
Accumulated other comprehensive income (loss), tax			(230)
Accumulated other comprehensive income (loss), net			445
Unrealized losses arising during the period	(2,711)		(2,737)
Unrealized holding loss on available-for-sale securities arising during the period, tax	638		931
Unrealized holding gain on available-for-sale securities arising during the period, net	(2,073)		(1,806)
Amounts reclassified from accumulated other comprehensive income, net	(21)	[1],[2]	138
Net current period other comprehensive income (loss), before tax	(2,744)		(2,946)
Net current period other comprehensive loss, tax	650		1,002
Other comprehensive loss	(2,094)		$ (1,944)
Reclassification of disproportional tax effect	14
Reclassification of disproportional tax effect	14
Accumulated other comprehensive income (loss), tax	$ 434			$ 1,232

[1] Income tax expense

[2] Securities gain, net