Note 3 - Securities - Amortized Cost and Fair Value of Securities Available-for-sale and Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019
Available-for-sale securities, amortized cost	$ 134,909	$ 142,028
Available-for-sale securities, gross unrealized gains	2,938	2,492
Available-for-sale securities, gross unrealized losses	(244)	(510)
Available-for-sale securities, fair value	137,603	144,010
Held-to-maturity, amortized cost	3,686	3,786
Held-to-maturity, gross unrecognized gains	78	35
Held-to-maturity, gross unrecognized losses
Held-to-maturity, fair value	3,764	3,821
US Government-sponsored Enterprises Debt Securities [Member]
Available-for-sale securities, amortized cost	14,646	19,227
Available-for-sale securities, gross unrealized gains	184	287
Available-for-sale securities, gross unrealized losses	(13)	(1)
Available-for-sale securities, fair value	14,817	19,513
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	55,737	56,405
Available-for-sale securities, gross unrealized gains	1,966	1,557
Available-for-sale securities, gross unrealized losses	(4)	(33)
Available-for-sale securities, fair value	57,699	57,929
Held-to-maturity, amortized cost	3,686	3,786
Held-to-maturity, gross unrecognized gains	78	35
Held-to-maturity, gross unrecognized losses
Held-to-maturity, fair value	3,764	3,821
Residential Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	54,497	56,309
Available-for-sale securities, gross unrealized gains	576	450
Available-for-sale securities, gross unrealized losses	(209)	(448)
Available-for-sale securities, fair value	54,864	56,311
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	1,651
Available-for-sale securities, gross unrealized gains	11
Available-for-sale securities, gross unrealized losses	(2)
Available-for-sale securities, fair value	1,660
Collateralized Mortgage Obligations [Member]
Available-for-sale securities, amortized cost	8,378	10,087
Available-for-sale securities, gross unrealized gains	201	198
Available-for-sale securities, gross unrealized losses	(16)	(28)
Available-for-sale securities, fair value	$ 8,563	$ 10,257

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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