Note 4 - Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Jun. 30, 2022
Balance	$ 7,675	$ 6,932	$ 7,160	$ 6,471
Provision for loan losses	160	85	795	545
Loans charged-off	(56)	(31)	(253)	(118)
Recoveries	44	11	121	99
Balance	7,823	6,997	7,823	6,997
Individually evaluated for impairment	0		0		$ 0
Total ending allowance balance	7,823	6,997	7,823	6,997	7,160
Loans individually evaluated for impairment	398		398		473
Total ending loans balance	690,853		690,853		613,057
Financial Asset Acquired [Member]
Acquired loans collectively evaluated for impairment	117		117		148
Loans collectively evaluated for impairment	33,476		33,476		41,542
Financial Asset Originated [Member]
Acquired loans collectively evaluated for impairment	7,706		7,706		7,012
Loans collectively evaluated for impairment	656,979		656,979		571,042
Commercial Portfolio Segment [Member]
Balance	1,006	976	960	904
Provision for loan losses	132	48	178	99
Loans charged-off	0	0	0	0
Recoveries	0	2	0	23
Balance	1,138	1,026	1,138	1,026
Individually evaluated for impairment	0		0		0
Total ending allowance balance	1,138	1,026	1,138	1,026	960
Loans individually evaluated for impairment	315		315		276
Total ending loans balance	99,466		99,466		87,251
Commercial Portfolio Segment [Member] | Financial Asset Acquired [Member]
Acquired loans collectively evaluated for impairment	0		0		1
Loans collectively evaluated for impairment	650		650		665
Commercial Portfolio Segment [Member] | Financial Asset Originated [Member]
Acquired loans collectively evaluated for impairment	1,138		1,138		959
Loans collectively evaluated for impairment	98,501		98,501		86,310
Commercial Real Estate Portfolio Segment [Member]
Balance	4,084	4,049	3,927	3,949
Provision for loan losses	(103)	(58)	53	40
Loans charged-off	0	0	0	0
Recoveries	0	0	1	2
Balance	3,981	3,991	3,981	3,991
Individually evaluated for impairment	0		0		0
Total ending allowance balance	3,981	3,991	3,981	3,991	3,927
Loans individually evaluated for impairment	38		38		42
Total ending loans balance	338,345		338,345		306,913
Commercial Real Estate Portfolio Segment [Member] | Financial Asset Acquired [Member]
Acquired loans collectively evaluated for impairment	42		42		62
Loans collectively evaluated for impairment	7,443		7,443		10,095
Commercial Real Estate Portfolio Segment [Member] | Financial Asset Originated [Member]
Acquired loans collectively evaluated for impairment	3,939		3,939		3,865
Loans collectively evaluated for impairment	330,864		330,864		296,776
Residential Portfolio Segment [Member]
Balance	1,677	1,490	1,645	1,307
Provision for loan losses	70	(16)	106	191
Loans charged-off	0	(1)	(6)	(41)
Recoveries	0	0	2	16
Balance	1,747	1,473	1,747	1,473
Individually evaluated for impairment	0		0		0
Total ending allowance balance	1,747	1,473	1,747	1,473	1,645
Loans individually evaluated for impairment	45		45		155
Total ending loans balance	186,776		186,776		173,944
Residential Portfolio Segment [Member] | Financial Asset Acquired [Member]
Acquired loans collectively evaluated for impairment	75		75		85
Loans collectively evaluated for impairment	23,778		23,778		27,731
Residential Portfolio Segment [Member] | Financial Asset Originated [Member]
Acquired loans collectively evaluated for impairment	1,672		1,672		1,560
Loans collectively evaluated for impairment	162,953		162,953		146,058
Consumer Portfolio Segment [Member]
Balance	908	417	628	311
Provision for loan losses	61	111	458	215
Loans charged-off	(56)	(30)	(247)	(77)
Recoveries	44	9	118	58
Balance	957	507	957	507
Individually evaluated for impairment	0		0		0
Total ending allowance balance	957	$ 507	957	$ 507	628
Loans individually evaluated for impairment	0		0		0
Total ending loans balance	66,266		66,266		44,949
Consumer Portfolio Segment [Member] | Financial Asset Acquired [Member]
Acquired loans collectively evaluated for impairment	0		0		0
Loans collectively evaluated for impairment	1,605		1,605		3,051
Consumer Portfolio Segment [Member] | Financial Asset Originated [Member]
Acquired loans collectively evaluated for impairment	957		957		628
Loans collectively evaluated for impairment	$ 64,661		$ 64,661		$ 41,898