Note 2 - Securities - Amortized Cost and Fair Value of Securities Available-for-sale and Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017
Available-for-sale securities, amortized cost	$ 135,641	$ 141,411
Available-for-sale securities, gross unrealized gains	1,491	1,542
Available-for-sale securities, gross unrealized losses	(750)	(867)
Available-for-sale securities, fair value	136,382	142,086
Held-to-maturity, amortized cost	4,164	4,259
Held-to-maturity, fair value	4,258	4,329
US Government-sponsored Enterprises Debt Securities [Member]
Available-for-sale securities, amortized cost	12,503	12,571
Available-for-sale securities, gross unrealized gains	89	90
Available-for-sale securities, gross unrealized losses	(73)	(74)
Available-for-sale securities, fair value	12,519	12,587
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	56,231	56,824
Available-for-sale securities, gross unrealized gains	872	890
Available-for-sale securities, gross unrealized losses	(217)	(254)
Available-for-sale securities, fair value	56,886	57,460
Held-to-maturity, amortized cost	4,164	4,259
Held-to-maturity, gross unrecognized gains	94	73
Held-to-maturity, gross unrecognized losses		(3)
Held-to-maturity, fair value	4,258	4,329
Residential Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	59,536	64,092
Available-for-sale securities, gross unrealized gains	164	184
Available-for-sale securities, gross unrealized losses	(356)	(438)
Available-for-sale securities, fair value	59,344	63,838
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	1,452	1,459
Available-for-sale securities, gross unrealized gains
Available-for-sale securities, gross unrealized losses	(4)	(1)
Available-for-sale securities, fair value	1,448	1,458
Collateralized Debt Obligations [Member]
Available-for-sale securities, amortized cost	5,738	6,310
Available-for-sale securities, gross unrealized gains		1
Available-for-sale securities, gross unrealized losses	(100)	(100)
Available-for-sale securities, fair value	5,638	6,211
Pooled Trust Preferred Securities Subject to Mandatory Redemption [Member]
Available-for-sale securities, amortized cost	181	155
Available-for-sale securities, gross unrealized gains	366	377
Available-for-sale securities, gross unrealized losses
Available-for-sale securities, fair value	$ 547	$ 532

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

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