Note 2 - Securities - Amortized Cost and Fair Value of Securities Available-for-sale and Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Available-for-sale securities, gross unrealized gains	$ 1,542	$ 3,658
Available-for-sale securities, gross unrealized losses	(867)	(37)
Available-for-sale securities, fair value	142,086	133,369
Held-to-maturity, amortized cost	4,259	3,494
Held-to-maturity, gross unrecognized gains	73	125
Held-to-maturity, gross unrecognized losses	(3)
Held-to-maturity, fair value	4,329	3,619
Available-for-sale securities, amortized cost	141,411	129,748
US Government-sponsored Enterprises Debt Securities [Member]
Available-for-sale securities, gross unrealized gains	90	362
Available-for-sale securities, gross unrealized losses	(74)
Available-for-sale securities, fair value	12,587	10,044
Available-for-sale securities, amortized cost	12,571	9,682
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, gross unrealized gains	890	2,010
Available-for-sale securities, gross unrealized losses	(254)	(8)
Available-for-sale securities, fair value	57,460	55,954
Held-to-maturity, amortized cost	4,259	3,494
Held-to-maturity, gross unrecognized gains	73	125
Held-to-maturity, gross unrecognized losses	(3)
Held-to-maturity, fair value	4,329	3,619
Available-for-sale securities, amortized cost	56,824	53,952
Residential Mortgage Backed Securities [Member]
Available-for-sale securities, gross unrealized gains	184	920
Available-for-sale securities, gross unrealized losses	(438)	(26)
Available-for-sale securities, fair value	63,838	59,596
Available-for-sale securities, amortized cost	64,092	58,702
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities, gross unrealized gains		41
Available-for-sale securities, gross unrealized losses	(1)
Available-for-sale securities, fair value	1,458	1,526
Available-for-sale securities, amortized cost	1,459	1,485
Collateralized Debt Obligations [Member]
Available-for-sale securities, gross unrealized gains	1	49
Available-for-sale securities, gross unrealized losses	(100)	(3)
Available-for-sale securities, fair value	6,211	5,820
Available-for-sale securities, amortized cost	6,310	5,774
Pooled Trust Preferred Securities Subject to Mandatory Redemption [Member]
Available-for-sale securities, gross unrealized gains	377	276
Available-for-sale securities, gross unrealized losses
Available-for-sale securities, fair value	532	429
Available-for-sale securities, amortized cost	$ 155	$ 153

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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Amount of debt securities categorized neither as held-to-maturity nor trading.

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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Amount of accumulated unrealized gain on investments in debt securities classified as held-to-maturity.

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Fair value of investments in debt securities classified as held-to-maturity.

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