Note 3 - Securities - Amortized Cost and Fair Value of Securities Available-for-sale and Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
Available-for-sale securities, amortized cost	$ 139,932	$ 138,525
Available-for-sale securities, gross unrealized gains	5,739	5,411
Available-for-sale securities, gross unrealized losses	(6)	(18)
Available-for-sale securities, fair value	145,665	143,918
Held-to-maturity, amortized cost	3,336	3,541
Held-to-maturity, gross unrecognized gains	269	327
Held-to-maturity, gross unrecognized losses
Held-to-maturity, fair value	3,605	3,868
US Treasury Securities [Member]
Available-for-sale securities, amortized cost	499	1,248
Available-for-sale securities, gross unrealized gains	2	8
Available-for-sale securities, gross unrealized losses
Available-for-sale securities, fair value	501	1,256
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	63,359	60,343
Available-for-sale securities, gross unrealized gains	3,675	3,149
Available-for-sale securities, gross unrealized losses
Available-for-sale securities, fair value	67,034	63,492
Held-to-maturity, amortized cost	3,336	3,541
Held-to-maturity, gross unrecognized gains	269	327
Held-to-maturity, gross unrecognized losses
Held-to-maturity, fair value	3,605	3,868
US Government-sponsored Enterprises Debt Securities [Member]
Available-for-sale securities, amortized cost	7,793	10,133
Available-for-sale securities, gross unrealized gains	316	399
Available-for-sale securities, gross unrealized losses
Available-for-sale securities, fair value	8,109	10,532
Residential Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	56,757	48,645
Available-for-sale securities, gross unrealized gains	1,496	1,515
Available-for-sale securities, gross unrealized losses	(5)	(4)
Available-for-sale securities, fair value	58,248	50,156
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities, amortized cost	7,004	8,444
Available-for-sale securities, gross unrealized gains	75	55
Available-for-sale securities, gross unrealized losses	(1)	(2)
Available-for-sale securities, fair value	7,078	8,497
Collateralized Mortgage Obligations [Member]
Available-for-sale securities, amortized cost	4,520	9,712
Available-for-sale securities, gross unrealized gains	175	285
Available-for-sale securities, gross unrealized losses		(12)
Available-for-sale securities, fair value	$ 4,695	$ 9,985

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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