Note 2 - Securities - Amortized Cost and Fair Value of Securities Available-for-sale and Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Available-for-sale securities, amortized cost	$ 135,628	$ 141,411
Available-for-sale securities, gross unrealized gains	1,317	1,542
Available-for-sale securities, gross unrealized losses	(1,207)	(867)
Available-for-sale securities, fair value	135,738	142,086
Held-to-maturity, amortized cost	4,061	4,259
Held-to-maturity, fair value	4,083	4,329
US Government-sponsored Enterprises Debt Securities [Member]
Available-for-sale securities, amortized cost	13,752	12,571
Available-for-sale securities, gross unrealized gains	30	90
Available-for-sale securities, gross unrealized losses	(146)	(74)
Available-for-sale securities, fair value	13,636	12,587
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	56,718	56,824
Available-for-sale securities, gross unrealized gains	746	890
Available-for-sale securities, gross unrealized losses	(283)	(254)
Available-for-sale securities, fair value	57,181	57,460
Held-to-maturity, amortized cost	4,061	4,259
Held-to-maturity, gross unrecognized gains	22	73
Held-to-maturity, gross unrecognized losses		(3)
Held-to-maturity, fair value	4,083	4,329
Residential Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	58,051	64,092
Available-for-sale securities, gross unrealized gains	98	184
Available-for-sale securities, gross unrealized losses	(631)	(438)
Available-for-sale securities, fair value	57,518	63,838
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	1,446	1,459
Available-for-sale securities, gross unrealized gains
Available-for-sale securities, gross unrealized losses	(10)	(1)
Available-for-sale securities, fair value	1,436	1,458
Collateralized Debt Obligations [Member]
Available-for-sale securities, amortized cost	5,483	6,310
Available-for-sale securities, gross unrealized gains		1
Available-for-sale securities, gross unrealized losses	(137)	(100)
Available-for-sale securities, fair value	5,346	6,211
Pooled Trust Preferred Securities Subject to Mandatory Redemption [Member]
Available-for-sale securities, amortized cost	178	155
Available-for-sale securities, gross unrealized gains	443	377
Available-for-sale securities, gross unrealized losses
Available-for-sale securities, fair value	$ 621	$ 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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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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