Note 4 - Loans - Recorded Investment by Risk Category (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Jun. 30, 2022
Financing Receivable, Net	$ 681,469	$ 604,683
Pass [Member]
Financing Receivable, Net	458,184	414,046
Special Mention [Member]
Financing Receivable, Net	4,564	2,909
Substandard [Member]
Financing Receivable, Net	5,035	4,889
Doubtful [Member]
Financing Receivable, Net	45	431
Not Rated [Member]
Financing Receivable, Net	223,025	190,782
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Net	97,687	86,265
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Net	1,059	350
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Net	556	178
Commercial Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Net	0	276
Commercial Portfolio Segment [Member] | Not Rated [Member]
Financing Receivable, Net	164	182
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable, Net	18,361	15,138
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	311,540	283,877
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	3,452	2,500
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	4,352	4,711
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	0	0
Commercial Real Estate Portfolio Segment [Member] | Not Rated [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Commercial Real Estate Portfolio Segment [Member] | Not Rated [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	640	687
Residential Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable, Net	2,860	1,234
Residential Portfolio Segment [Member] | Pass [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	2,272	1,321
Residential Portfolio Segment [Member] | Pass [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	23,818	25,606
Residential Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Residential Portfolio Segment [Member] | Special Mention [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	0	0
Residential Portfolio Segment [Member] | Special Mention [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	53	59
Residential Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Residential Portfolio Segment [Member] | Substandard [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	18	0
Residential Portfolio Segment [Member] | Substandard [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	109	0
Residential Portfolio Segment [Member] | Doubtful [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Residential Portfolio Segment [Member] | Doubtful [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	18	22
Residential Portfolio Segment [Member] | Doubtful [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	27	133
Residential Portfolio Segment [Member] | Not Rated [Member] | Construction Loans [Member]
Financing Receivable, Net	4,475	3,141
Residential Portfolio Segment [Member] | Not Rated [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	152,868	142,163
Residential Portfolio Segment [Member] | Not Rated [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	258	265
Consumer Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Net	1,646	605
Consumer Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Net	0	0
Consumer Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Net	0	0
Consumer Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Net	0	0
Consumer Portfolio Segment [Member] | Not Rated [Member]
Financing Receivable, Net	$ 64,620	$ 44,344