Note 3 - Securities - Amortized Cost and Fair Value of Securities Available-for-sale and Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Available-for-sale securities, amortized cost	$ 142,028	$ 146,097
Available-for-sale securities, gross unrealized gains	2,492	909
Available-for-sale securities, gross unrealized losses	(510)	(2,978)
Available-for-sale securities, fair value	144,010	144,028
Held-to-maturity, amortized cost	3,786	4,024
Held-to-maturity, gross unrecognized gains	35	24
Held-to-maturity, gross unrecognized losses
Held-to-maturity, fair value	3,821	4,048
US Government-sponsored Enterprises Debt Securities [Member]
Available-for-sale securities, amortized cost	19,227	16,488
Available-for-sale securities, gross unrealized gains	287	6
Available-for-sale securities, gross unrealized losses	(1)	(372)
Available-for-sale securities, fair value	19,513	16,122
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	56,405	56,964
Available-for-sale securities, gross unrealized gains	1,557	339
Available-for-sale securities, gross unrealized losses	(33)	(713)
Available-for-sale securities, fair value	57,929	56,590
Held-to-maturity, amortized cost	3,786	4,024
Held-to-maturity, gross unrecognized gains	35	24
Held-to-maturity, gross unrecognized losses
Held-to-maturity, fair value	3,821	4,048
Residential Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	56,309	65,062
Available-for-sale securities, gross unrealized gains	450	6
Available-for-sale securities, gross unrealized losses	(448)	(1,660)
Available-for-sale securities, fair value	56,311	63,408
Collateralized Mortgage Obligations [Member]
Available-for-sale securities, amortized cost	10,087	5,973
Available-for-sale securities, gross unrealized gains	198	9
Available-for-sale securities, gross unrealized losses	(28)	(216)
Available-for-sale securities, fair value	$ 10,257	5,766
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost		1,432
Available-for-sale securities, gross unrealized gains
Available-for-sale securities, gross unrealized losses		(17)
Available-for-sale securities, fair value		1,415
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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