Note 4 - Loans - Recorded Investment by Risk Category (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Pass [Member]
Financing Receivable, Net	$ 401,493	$ 413,704
Special Mention [Member]
Financing Receivable, Net	4,143	1,798
Substandard [Member]
Financing Receivable, Net	5,230	9,914
Doubtful [Member]
Financing Receivable, Net	1,771	1,042
Not Rated [Member]
Financing Receivable, Net	154,974	118,339
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Net	109,118	152,911
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Net	280	143
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Net	309	3,979
Commercial Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Net	303	21
Commercial Portfolio Segment [Member] | Not Rated [Member]
Financing Receivable, Net	277	274
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable, Net	10,478	16,241
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	259,327	220,311
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Financing Receivable, Net
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	3,700	1,469
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Financing Receivable, Net
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	4,718	5,378
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Construction Loans [Member]
Financing Receivable, Net
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	874	785
Commercial Real Estate Portfolio Segment [Member] | Not Rated [Member] | Construction Loans [Member]
Financing Receivable, Net
Commercial Real Estate Portfolio Segment [Member] | Not Rated [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	929	1,773
Residential Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable, Net	1,849	3,234
Residential Portfolio Segment [Member] | Pass [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	1,715	2,419
Residential Portfolio Segment [Member] | Pass [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	18,312	18,435
Residential Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Financing Receivable, Net
Residential Portfolio Segment [Member] | Special Mention [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net
Residential Portfolio Segment [Member] | Special Mention [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	163	186
Residential Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Financing Receivable, Net
Residential Portfolio Segment [Member] | Substandard [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	6	334
Residential Portfolio Segment [Member] | Substandard [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	197	223
Residential Portfolio Segment [Member] | Doubtful [Member] | Construction Loans [Member]
Financing Receivable, Net
Residential Portfolio Segment [Member] | Doubtful [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	392
Residential Portfolio Segment [Member] | Doubtful [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	202	236
Residential Portfolio Segment [Member] | Not Rated [Member] | Construction Loans [Member]
Financing Receivable, Net	7,320	6,201
Residential Portfolio Segment [Member] | Not Rated [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	117,218	88,521
Residential Portfolio Segment [Member] | Not Rated [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	274	330
Consumer Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Net	694	153
Consumer Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Net
Consumer Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Net
Consumer Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Net
Consumer Portfolio Segment [Member] | Not Rated [Member]
Financing Receivable, Net	$ 28,956	$ 21,240