Note 2 - Securities - Amortized Cost and Fair Value of Securities Available-for-sale and Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Available-for-sale securities, amortized cost	$ 141,217	$ 146,097
Available-for-sale securities, gross unrealized gains	237	909
Available-for-sale securities, gross unrealized losses	(3,786)	(2,978)
Available-for-sale securities, fair value	137,668	144,028
Held-to-maturity, amortized cost	3,929	4,024
Held-to-maturity, gross unrecognized gains	45	24
Held-to-maturity, gross unrecognized losses	(9)
Held-to-maturity, fair value	3,965	4,048
US Government-sponsored Enterprises Debt Securities [Member]
Available-for-sale securities, amortized cost	16,320	16,488
Available-for-sale securities, gross unrealized gains		6
Available-for-sale securities, gross unrealized losses	(481)	(372)
Available-for-sale securities, fair value	15,839	16,122
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	55,795	56,964
Available-for-sale securities, gross unrealized gains	237	339
Available-for-sale securities, gross unrealized losses	(974)	(713)
Available-for-sale securities, fair value	55,058	56,590
Held-to-maturity, amortized cost	3,929	4,024
Held-to-maturity, gross unrecognized gains	45	24
Held-to-maturity, gross unrecognized losses	(9)
Held-to-maturity, fair value	3,965	4,048
Residential Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	62,011	65,062
Available-for-sale securities, gross unrealized gains		6
Available-for-sale securities, gross unrealized losses	(2,084)	(1,660)
Available-for-sale securities, fair value	59,927	63,408
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	1,425	1,432
Available-for-sale securities, gross unrealized gains
Available-for-sale securities, gross unrealized losses	(17)	(17)
Available-for-sale securities, fair value	1,408	1,415
Collateralized Mortgage Obligations [Member]
Available-for-sale securities, amortized cost	5,666	5,973
Available-for-sale securities, gross unrealized gains		9
Available-for-sale securities, gross unrealized losses	(230)	(216)
Available-for-sale securities, fair value	$ 5,436	5,766
Pooled Trust Preferred Securities Subject to Mandatory Redemption [Member]
Available-for-sale securities, amortized cost		178
Available-for-sale securities, gross unrealized gains		549
Available-for-sale securities, gross unrealized losses
Available-for-sale securities, fair value		$ 727

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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