Note 6 - Accumulated Other Comprehensive Income - Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands		3 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Accumulated other comprehensive income (loss), before tax		$ 3,095	$ 2,141	$ 3,621	$ 1,363
Accumulated other comprehensive income (loss), tax		(1,053)	(728)	(1,232)	(464)
Accumulated other comprehensive income		2,042	1,413	$ 2,389	$ 899
Unrealized holding loss on available-for-sale securities arising during the period		(423)	813
Unrealized holding loss on available-for-sale securities arising during the period		144	276
Unrealized holding loss on available-for-sale securities arising during the period		(279)	537
Amounts reclassified from accumulated other comprehensive income	[1],[2]	(103)	(35)
Amounts reclassified from accumulated other comprehensive income	[1],[2]	35	12
Amounts reclassified from accumulated other comprehensive income	[1],[2]	(68)	(23)
Net current period other comprehensive income		(526)	778
Net current period other comprehensive income		179	(264)
Net current period other comprehensive income		(347)	514
Unrealized holding gain on available-for-sale securities arising during the period		$ (144)	$ (276)

[1] Income tax expense

[2] Securities gain, net