Note 2 - Securities - Amortized Cost and Fair Value of Securities Available-for-sale and Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Available-for-sale securities, amortized cost	$ 146,097	$ 141,411
Available-for-sale securities, gross unrealized gains	909	1,542
Available-for-sale securities, gross unrealized losses	(2,978)	(867)
Available-for-sale securities, fair value	144,028	142,086
Held-to-maturity, amortized cost	4,024	4,259
Held-to-maturity, gross unrecognized gains	24	73
Held-to-maturity, gross unrecognized losses		(3)
Held-to-maturity, fair value	4,048	4,329
US Government-sponsored Enterprises Debt Securities [Member]
Available-for-sale securities, amortized cost	16,488	12,571
Available-for-sale securities, gross unrealized gains	6	90
Available-for-sale securities, gross unrealized losses	(372)	(74)
Available-for-sale securities, fair value	16,122	12,587
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	56,964	56,824
Available-for-sale securities, gross unrealized gains	339	890
Available-for-sale securities, gross unrealized losses	(713)	(254)
Available-for-sale securities, fair value	56,590	57,460
Held-to-maturity, amortized cost	4,024	4,259
Held-to-maturity, gross unrecognized gains	24	73
Held-to-maturity, gross unrecognized losses		(3)
Held-to-maturity, fair value	4,048	4,329
Residential Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	65,062	64,092
Available-for-sale securities, gross unrealized gains	6	184
Available-for-sale securities, gross unrealized losses	(1,660)	(438)
Available-for-sale securities, fair value	63,408	63,838
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	1,432	1,459
Available-for-sale securities, gross unrealized gains
Available-for-sale securities, gross unrealized losses	(17)	(1)
Available-for-sale securities, fair value	1,415	1,458
Collateralized Mortgage Obligations [Member]
Available-for-sale securities, amortized cost	5,973	6,310
Available-for-sale securities, gross unrealized gains	9	1
Available-for-sale securities, gross unrealized losses	(216)	(100)
Available-for-sale securities, fair value	5,766	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	549	377
Available-for-sale securities, gross unrealized losses
Available-for-sale securities, fair value	$ 727	$ 532

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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