Note 4 - Loans - Recorded Investment by Risk Category (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022
Financing Receivable, Net	$ 702,638	$ 604,683
Pass [Member]
Financing Receivable, Net	474,662	414,046
Special Mention [Member]
Financing Receivable, Net	8,321	2,909
Substandard [Member]
Financing Receivable, Net	1,163	4,889
Doubtful [Member]
Financing Receivable, Net	54	431
Not Rated [Member]
Financing Receivable, Net	227,760	190,782
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Net	110,928	86,265
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Net	1,174	350
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Net	573	178
Commercial Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Net	0	276
Commercial Portfolio Segment [Member] | Not Rated [Member]
Financing Receivable, Net	151	182
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable, Net	23,996	15,138
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	310,427	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	7,097	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	468	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	51	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	662	687
Residential Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable, Net	3,227	1,234
Residential Portfolio Segment [Member] | Pass [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	2,013	1,321
Residential Portfolio Segment [Member] | Pass [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	23,474	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	50	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	17	0
Residential Portfolio Segment [Member] | Substandard [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	105	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	0	22
Residential Portfolio Segment [Member] | Doubtful [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	3	133
Residential Portfolio Segment [Member] | Not Rated [Member] | Construction Loans [Member]
Financing Receivable, Net	5,287	3,141
Residential Portfolio Segment [Member] | Not Rated [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	156,407	142,163
Residential Portfolio Segment [Member] | Not Rated [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	256	265
Consumer Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Net	597	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	$ 64,997	$ 44,344