Note 15 - Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Amounts reclassified from accumulated other comprehensive income, net	[1],[2]	$ (138)	$ (133)
Net current period other comprehensive income (loss), before tax		(2,946)	2,258
Net current period other comprehensive loss, tax		1,002	(768)
Other comprehensive income		(1,944)	1,490
Accumulated other comprehensive income (loss), before tax		675	3,621	$ 1,363
Accumulated other comprehensive income (loss), tax		(230)	(1,232)	(464)
Accumulated other comprehensive income		445	2,389	$ 899
Unrealized holding gain on available-for-sale securities arising during the period, before tax		(2,737)	2,460
Unrealized holding loss on available-for-sale securities arising during the period, tax		931	(837)
Unrealized holding gain on available-for-sale securities arising during the period, net		(1,806)	1,623
Amounts reclassified from accumulated other comprehensive income, before tax	[1],[2]	(209)	(202)
Amounts reclassified from accumulated other comprehensive income, tax	[1],[2]	$ 71	$ 69

[1] Income tax expense

[2] Securities gain, net